{"id":"CVE-2025-61770","aliases":["ALSA-2025:19719","ALSA-2025:20962","ALSA-2025:21036","CLSA-2026-1790243751","CLSA-2026-1790610331","CLSA-2026-1790610419","DEBIAN-CVE-2025-61770","DLA-4357-1","DSA-6048-1","EUVD-2025-32057","GHSA-p543-xpfm-54cp","MGASA-2025-0334","RHSA-2025:19512","RHSA-2025:19513","RHSA-2025:19647","RHSA-2025:19719","RHSA-2025:19733","RHSA-2025:19734","RHSA-2025:19736","RHSA-2025:19800","RHSA-2025:19948","RHSA-2025:20962","RHSA-2025:21036","RHSA-2025:21696","RLSA-2025:19512","RLSA-2025:19719","RLSA-2025:20962","UBUNTU-CVE-2025-61770","openSUSE-SU-2025:15621-1","openSUSE-SU-2026:10286-1"],"status":"published","title":"Rack's unbounded multipart preamble buffering enables DoS (memory exhaustion)","description":"Rack is a modular Ruby web server interface. In versions prior to 2.2.19, 3.1.17, and 3.2.2, `Rack::Multipart::Parser` buffers the entire multipart preamble (bytes before the first boundary) in memory without any size limit. A client can send a large preamble followed by a valid boundary, causing significant memory use and potential process termination due to out-of-memory (OOM) conditions. Remote attackers can trigger large transient memory spikes by including a long preamble in multipart/form-data requests. The impact scales with allowed request sizes and concurrency, potentially causing worker crashes or severe slowdown due to garbage collection. Versions 2.2.19, 3.1.17, and 3.2.2 enforce a preamble size limit (e.g., 16 KiB) or discard preamble data entirely. Workarounds include limiting total request body size at the proxy or web server level and monitoring memory and set per-process limits to prevent OOM conditions.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.0093,"percentile":0.61037,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-400"],"published":"2025-10-07T14:30:04Z","modified":"2026-10-29T11:32:28Z","fixes":[{"ecosystem":"RubyGems","package":"rack","fixed_in":["2.2.19","3.1.17","3.2.2"],"sources":["ghsa","osv"]},{"ecosystem":"Debian:12","package":"ruby-rack","fixed_in":["2.2.20-0+deb12u1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"ruby-rack","fixed_in":["3.1.18-1~deb13u1"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"ruby-rack","fixed_in":["3.1.18-1"],"sources":["osv"]},{"ecosystem":"Ubuntu:22.04:LTS","package":"ruby-rack","fixed_in":["2.1.4-5ubuntu1.2"],"sources":["osv"]},{"ecosystem":"Ubuntu:24.04:LTS","package":"ruby-rack","fixed_in":["2.2.7-1ubuntu0.5"],"sources":["osv"]},{"ecosystem":"Ubuntu:25.10","package":"ruby-rack","fixed_in":["3.1.16-0.1ubuntu0.1"],"sources":["osv"]}],"affected":[{"source":"ghsa","ecosystem":"RubyGems","package":"rack","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.2.19"}]}]},{"source":"ghsa","ecosystem":"RubyGems","package":"rack","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.1"},{"fixed":"3.1.17"}]}]},{"source":"ghsa","ecosystem":"RubyGems","package":"rack","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"3.2"},{"fixed":"3.2.2"}]}]},{"source":"osv","ecosystem":"AlmaLinux:8","package":"pcs","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.10.18-2.el8_10.7.alma.1"}]}],"bundled":5},{"source":"osv","ecosystem":"AlmaLinux:8","package":"pcs-snmp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.10.18-2.el8_10.7.alma.1"}]}],"bundled":5},{"source":"osv","ecosystem":"AlmaLinux:9","package":"pcs","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.11.10-1.el9_7.1"}]}],"bundled":5},{"source":"osv","ecosystem":"AlmaLinux:9","package":"pcs-snmp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.11.10-1.el9_7.1"}]}],"bundled":5},{"source":"osv","ecosystem":"AlmaLinux:10","package":"cockpit-ha-cluster","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.12.1-1.el10_1.1"}]}],"bundled":5},{"source":"osv","ecosystem":"TuxCare:CentOS-Stream:8","package":"pcs","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.10.18-2.el8.tuxcare.els1"}]}],"bundled":10},{"source":"osv","ecosystem":"TuxCare:CentOS-Stream:8","package":"pcs-snmp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.10.18-2.el8.tuxcare.els1"}]}],"bundled":10},{"source":"osv","ecosystem":"TuxCare:CentOS:8.4","package":"pcs","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.10.8-1.el8.tuxcare.els1"}]}],"bundled":10},{"source":"osv","ecosystem":"TuxCare:CentOS:8.4","package":"pcs-snmp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.10.8-1.el8.tuxcare.els1"}]}],"bundled":10},{"source":"osv","ecosystem":"TuxCare:CentOS:8.5","package":"pcs","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.10.8-1.el8.tuxcare.els1"}]}],"bundled":10},{"source":"osv","ecosystem":"TuxCare:CentOS:8.5","package":"pcs-snmp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.10.8-1.el8.tuxcare.els1"}]}],"bundled":10},{"source":"osv","ecosystem":"Debian:12","package":"ruby-rack","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.2.20-0+deb12u1"}]}],"versions":["2.2.13-1~deb12u1","2.2.6.4-1","2.2.6.4-1+deb12u1","2.2.7-1","2.2.7-1.1"]},{"source":"osv","ecosystem":"Debian:13","package":"ruby-rack","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.1.18-1~deb13u1"}]}],"versions":["3.1.16-0.1"]},{"source":"osv","ecosystem":"Debian:14","package":"ruby-rack","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.1.18-1"}]}],"versions":["3.1.16-0.1","3.1.18-1~deb13u1"]},{"source":"osv","ecosystem":"Debian:11","package":"ruby-rack","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.1.4-3+deb11u4"}]}],"versions":["2.1.4-3","2.1.4-3+deb11u1","2.1.4-3+deb11u2","2.1.4-3+deb11u3"],"bundled":8},{"source":"osv","ecosystem":"Debian:12","package":"ruby-rack","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.2.20-0+deb12u1"}]}],"versions":["2.2.13-1~deb12u1","2.2.6.4-1","2.2.6.4-1+deb12u1","2.2.7-1","2.2.7-1.1"],"bundled":5},{"source":"osv","ecosystem":"Debian:13","package":"ruby-rack","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.1.18-1~deb13u1"}]}],"versions":["3.1.16-0.1"],"bundled":5},{"source":"osv","ecosystem":"RubyGems","package":"rack","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.2.19"}]}],"versions":["0.1.0","0.2.0","0.3.0","0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Advisory","advisory","web","article","report"]},{"url":"https://github.com/rack/rack/commit/589127f4ac8b5cf11cf88fb0cd116ffed4d2181e","tags":["x_refsource_MISC","Patch","fix","web","article"]},{"url":"https://github.com/rack/rack/commit/d869fed663b113b95a74ad53e1b5cae6ab31f29e","tags":["x_refsource_MISC","Patch","fix","web","article"]},{"url":"https://github.com/rack/rack/commit/e08f78c656c9394d6737c022bde087e0f33336fd","tags":["x_refsource_MISC","Patch","fix","web","article"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-61770","tags":["advisory"]},{"url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/rack/CVE-2025-61770.yml","tags":["web"]},{"url":"https://github.com/advisories/GHSA-p543-xpfm-54cp"},{"url":"https://access.redhat.com/errata/RHSA-2025:19719","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2025-59830","tags":["report"]},{"url":"https://access.redhat.com/security/cve/CVE-2025-61770","tags":["report"]},{"url":"https://access.redhat.com/security/cve/CVE-2025-61771","tags":["report"]},{"url":"https://access.redhat.com/security/cve/CVE-2025-61772","tags":["report"]},{"url":"https://access.redhat.com/security/cve/CVE-2025-61919","tags":["report"]},{"url":"https://bugzilla.redhat.com/2398167","tags":["report"]},{"url":"https://bugzilla.redhat.com/2402174","tags":["report"]},{"url":"https://bugzilla.redhat.com/2402175","tags":["report"]},{"url":"https://bugzilla.redhat.com/2402200","tags":["report"]},{"url":"https://bugzilla.redhat.com/2403180","tags":["report"]},{"url":"https://errata.almalinux.org/8/ALSA-2025-19719.html","tags":["advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2025:20962","tags":["advisory"]},{"url":"https://errata.almalinux.org/9/ALSA-2025-20962.html","tags":["advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2025:21036","tags":["advisory"]},{"url":"https://errata.almalinux.org/10/ALSA-2025-21036.html","tags":["advisory"]},{"url":"https://errata.tuxcare.com/els_os/centos-stream8els/CLSA-2026-1790243751.html","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-49761","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-52804","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-46727","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-47287","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-59830","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-61771","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-61772","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-61919","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-31958","tags":["advisory"]},{"url":"https://errata.tuxcare.com/els_os/centos8.4els/CLSA-2026-1790610331.html","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-25126","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-26141","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-26146","tags":["advisory"]},{"url":"https://errata.tuxcare.com/els_os/centos8.5els/CLSA-2026-1790610419.html","tags":["advisory"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/61xxx/CVE-2025-61770.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2025-61770","tags":["advisory"]},{"url":"https://github.com/rack/rack","tags":["package"]},{"url":"https://advisories.mageia.org/MGASA-2025-0334.html","tags":["advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=34755","tags":["report"]},{"url":"https://rack.github.io/rack/3.2/CHANGELOG_md.html","tags":["web"]},{"url":"https://access.redhat.com/errata/RHSA-2025:19512","tags":["advisory"]},{"url":"https://access.redhat.com/security/updates/classification/#important","tags":["article"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2398167","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2402174","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2402175","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2402200","tags":["report"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2403180","tags":["report"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2025/rhsa-2025_19512.json","tags":["advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-59830","tags":["advisory"]},{"url":"https://github.com/rack/rack/commit/54e4ffdd5affebcb0c015cc6ae74635c0831ed71","tags":["article"]},{"url":"https://github.com/rack/rack/security/advisories/GHSA-625h-95r8-8xpm","tags":["article"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-61770","tags":["advisory","report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-61771","tags":["advisory"]},{"url":"https://github.com/rack/rack/security/advisories/GHSA-w9pc-fmgc-vxvw","tags":["article"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-61772","tags":["advisory"]},{"url":"https://github.com/rack/rack/security/advisories/GHSA-wpv5-97wm-hp9c","tags":["article"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-61919","tags":["advisory"]},{"url":"https://github.com/rack/rack/commit/4e2c903991a790ee211a3021808ff4fd6fe82881","tags":["article"]},{"url":"https://github.com/rack/rack/commit/cbd541e8a3d0c5830a3c9a30d3718ce2e124f9db","tags":["article"]},{"url":"https://github.com/rack/rack/commit/e179614c4a653283286f5f046428cbb85f21146f","tags":["article"]},{"url":"https://github.com/rack/rack/security/advisories/GHSA-6xw4-3v39-52mm","tags":["article"]},{"url":"https://access.redhat.com/errata/RHSA-2025:19513","tags":["advisory"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2025/rhsa-2025_19513.json","tags":["advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2025:19647","tags":["advisory"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2025/rhsa-2025_19647.json","tags":["advisory"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2025/rhsa-2025_19719.json","tags":["advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2025:19733","tags":["advisory"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2025/rhsa-2025_19733.json","tags":["advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2025:19734","tags":["advisory"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2025/rhsa-2025_19734.json","tags":["advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2025:19736","tags":["advisory"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2025/rhsa-2025_19736.json","tags":["advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2025:19800","tags":["advisory"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2025/rhsa-2025_19800.json","tags":["advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2025:19948","tags":["advisory"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2025/rhsa-2025_19948.json","tags":["advisory"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2025/rhsa-2025_20962.json","tags":["advisory"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2025/rhsa-2025_21036.json","tags":["advisory"]},{"url":"https://access.redhat.com/errata/RHSA-2025:21696","tags":["advisory"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2025/rhsa-2025_21696.json","tags":["advisory"]},{"url":"https://errata.rockylinux.org/RLSA-2025:19512","tags":["advisory"]},{"url":"https://errata.rockylinux.org/RLSA-2025:19719","tags":["advisory"]},{"url":"https://errata.rockylinux.org/RLSA-2025:20962","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2025-61770","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-7960-1","tags":["advisory"]},{"url":"","tags":["advisory"]},{"url":"https://www.suse.com/security/cve/CVE-2025-61770","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-61771","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-61772","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2013-0262","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2013-0263","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2015-3225","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2018-16471","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2019-16782","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2020-8184","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2022-30122","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2022-30123","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2022-44570","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2022-44571","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2022-44572","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2023-27530","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2023-27539","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2024-25126","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2024-26141","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2024-26146","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-25184","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-27111","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-27610","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-46727","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-59830","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2025-61919","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-22860","tags":["web"]},{"url":"https://www.suse.com/security/cve/CVE-2026-25500","tags":["web"]}],"sources":{"cve":[{"id":"CVE-2025-61770","title":"Rack's unbounded multipart preamble buffering enables DoS (memory exhaustion)","description":"Rack is a modular Ruby web server interface. In versions prior to 2.2.19, 3.1.17, and 3.2.2, `Rack::Multipart::Parser` buffers the entire multipart preamble (bytes before the first boundary) in memory without any size limit. A client can send a large preamble followed by a valid boundary, causing significant memory use and potential process termination due to out-of-memory (OOM) conditions. Remote attackers can trigger large transient memory spikes by including a long preamble in multipart/form-data requests. The impact scales with allowed request sizes and concurrency, potentially causing worker crashes or severe slowdown due to garbage collection. Versions 2.2.19, 3.1.17, and 3.2.2 enforce a preamble size limit (e.g., 16 KiB) or discard preamble data entirely. Workarounds include limiting total request body size at the proxy or web server level and monitoring memory and set per-process limits to prevent OOM conditions.","status":"published","published":"2025-10-07T14:30:04.552Z","modified":"2025-10-07T15:43:06.827Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:32:45.105469Z"}],"euvd":[{"id":"EUVD-2025-32057","description":"Rack is a modular Ruby web server interface. In versions prior to 2.2.19, 3.1.17, and 3.2.2, `Rack::Multipart::Parser` buffers the entire multipart preamble (bytes before the first boundary) in memory without any size limit. A client can send a large preamble followed by a valid boundary, causing significant memory use and potential process termination due to out-of-memory (OOM) conditions. Remote attackers can trigger large transient memory spikes by including a long preamble in multipart/form-data requests. The impact scales with allowed request sizes and concurrency, potentially causing worker crashes or severe slowdown due to garbage collection. Versions 2.2.19, 3.1.17, and 3.2.2 enforce a preamble size limit (e.g., 16 KiB) or discard preamble data entirely. Workarounds include limiting total request body size at the proxy or web server level and monitoring memory and set per-process limits to prevent OOM conditions.","status":"published","published":"2025-10-07T14:30:04Z","modified":"2025-10-07T15:43:06Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T20:31:35.432127Z"}],"ghsa":[{"id":"GHSA-p543-xpfm-54cp","title":"Rack's unbounded multipart preamble buffering enables DoS (memory exhaustion)","description":"## Summary\n\n`Rack::Multipart::Parser` buffers the entire multipart **preamble** (bytes before the first boundary) in memory without any size limit. A client can send a large preamble followed by a valid boundary, causing significant memory use and potential process termination due to out-of-memory (OOM) conditions.\n\n## Details\n\nWhile searching for the first boundary, the parser appends incoming data into a shared buffer (`@sbuf.concat(content)`) and scans for the boundary pattern:\n\n```ruby\n@sbuf.scan_until(@body_regex)\n```\n\nIf the boundary is not yet found, the parser continues buffering data indefinitely. There is no trimming or size cap on the preamble, allowing attackers to send arbitrary amounts of data before the first boundary.\n\n## Impact\n\nRemote attackers can trigger large transient memory spikes by including a long preamble in multipart/form-data requests. The impact scales with allowed request sizes and concurrency, potentially causing worker crashes or severe slowdown due to garbage collection.\n\n## Mitigation\n\n* **Upgrade:** Use a patched version of Rack that enforces a preamble size limit (e.g., 16 KiB) or discards preamble data entirely per [RFC 2046 § 5.1.1](https://www.rfc-editor.org/rfc/rfc2046.html#section-5.1.1).\n* **Workarounds:**\n  * Limit total request body size at the proxy or web server level.\n  * Monitor memory and set per-process limits to prevent OOM conditions.","status":"published","published":"2025-10-07T17:26:16Z","modified":"2025-10-13T15:29:38Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:39:00.807341Z"}],"nvd":[{"id":"CVE-2025-61770","description":"Rack is a modular Ruby web server interface. In versions prior to 2.2.19, 3.1.17, and 3.2.2, `Rack::Multipart::Parser` buffers the entire multipart preamble (bytes before the first boundary) in memory without any size limit. A client can send a large preamble followed by a valid boundary, causing significant memory use and potential process termination due to out-of-memory (OOM) conditions. Remote attackers can trigger large transient memory spikes by including a long preamble in multipart/form-data requests. The impact scales with allowed request sizes and concurrency, potentially causing worker crashes or severe slowdown due to garbage collection. Versions 2.2.19, 3.1.17, and 3.2.2 enforce a preamble size limit (e.g., 16 KiB) or discard preamble data entirely. Workarounds include limiting total request body size at the proxy or web server level and monitoring memory and set per-process limits to prevent OOM conditions.","status":"published","published":"2025-10-07T15:16:02.95Z","modified":"2026-10-19T16:10:00.26Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:11:35.93863Z"}],"osv":[{"id":"CVE-2025-61770","title":"Rack's unbounded multipart preamble buffering enables DoS (memory exhaustion)","description":"Rack is a modular Ruby web server interface. In versions prior to 2.2.19, 3.1.17, and 3.2.2, `Rack::Multipart::Parser` buffers the entire multipart preamble (bytes before the first boundary) in memory without any size limit. A client can send a large preamble followed by a valid boundary, causing significant memory use and potential process termination due to out-of-memory (OOM) conditions. Remote attackers can trigger large transient memory spikes by including a long preamble in multipart/form-data requests. The impact scales with allowed request sizes and concurrency, potentially causing worker crashes or severe slowdown due to garbage collection. Versions 2.2.19, 3.1.17, and 3.2.2 enforce a preamble size limit (e.g., 16 KiB) or discard preamble data entirely. Workarounds include limiting total request body size at the proxy or web server level and monitoring memory and set per-process limits to prevent OOM conditions.","status":"published","published":"2025-10-07T14:30:04.552Z","modified":"2026-10-28T02:31:14.356250307Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T15:44:51.516975Z"},{"id":"DEBIAN-CVE-2025-61770","description":"Rack is a modular Ruby web server interface. In versions prior to 2.2.19, 3.1.17, and 3.2.2, `Rack::Multipart::Parser` buffers the entire multipart preamble (bytes before the first boundary) in memory without any size limit. A client can send a large preamble followed by a valid boundary, causing significant memory use and potential process termination due to out-of-memory (OOM) conditions. Remote attackers can trigger large transient memory spikes by including a long preamble in multipart/form-data requests. The impact scales with allowed request sizes and concurrency, potentially causing worker crashes or severe slowdown due to garbage collection. Versions 2.2.19, 3.1.17, and 3.2.2 enforce a preamble size limit (e.g., 16 KiB) or discard preamble data entirely. Workarounds include limiting total request body size at the proxy or web server level and monitoring memory and set per-process limits to prevent OOM conditions.","status":"published","published":"2025-10-07T15:16:02.95Z","modified":"2026-10-23T17:47:41.092806967Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:47.697959Z"},{"id":"GHSA-p543-xpfm-54cp","title":"Rack's unbounded multipart preamble buffering enables DoS (memory exhaustion)","description":"## Summary\n\n`Rack::Multipart::Parser` buffers the entire multipart **preamble** (bytes before the first boundary) in memory without any size limit. A client can send a large preamble followed by a valid boundary, causing significant memory use and potential process termination due to out-of-memory (OOM) conditions.\n\n## Details\n\nWhile searching for the first boundary, the parser appends incoming data into a shared buffer (`@sbuf.concat(content)`) and scans for the boundary pattern:\n\n```ruby\n@sbuf.scan_until(@body_regex)\n```\n\nIf the boundary is not yet found, the parser continues buffering data indefinitely. There is no trimming or size cap on the preamble, allowing attackers to send arbitrary amounts of data before the first boundary.\n\n## Impact\n\nRemote attackers can trigger large transient memory spikes by including a long preamble in multipart/form-data requests. The impact scales with allowed request sizes and concurrency, potentially causing worker crashes or severe slowdown due to garbage collection.\n\n## Mitigation\n\n* **Upgrade:** Use a patched version of Rack that enforces a preamble size limit (e.g., 16 KiB) or discards preamble data entirely per [RFC 2046 § 5.1.1](https://www.rfc-editor.org/rfc/rfc2046.html#section-5.1.1).\n* **Workarounds:**\n  * Limit total request body size at the proxy or web server level.\n  * Monitor memory and set per-process limits to prevent OOM conditions.","status":"published","published":"2025-10-07T17:26:16Z","modified":"2026-09-10T03:50:30.040266194Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T15:46:52.534897Z"},{"id":"RHSA-2025:19512","title":"Red Hat Security Advisory: pcs security update","status":"published","published":"2025-11-04T10:04:02Z","modified":"2026-09-26T10:02:56Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:16.096024Z"},{"id":"RHSA-2025:19513","title":"Red Hat Security Advisory: pcs security update","status":"published","published":"2025-11-04T10:04:02Z","modified":"2026-09-26T10:02:56Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:16.096024Z"},{"id":"RHSA-2025:19647","title":"Red Hat Security Advisory: pcs security update","status":"published","published":"2025-11-05T10:05:01Z","modified":"2026-09-26T10:02:57Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:16.096024Z"},{"id":"RHSA-2025:19719","title":"Red Hat Security Advisory: pcs security update","status":"published","published":"2025-11-05T10:05:03Z","modified":"2026-09-26T10:02:57Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:16.096024Z"},{"id":"RHSA-2025:19733","title":"Red Hat Security Advisory: pcs security update","status":"published","published":"2025-11-05T10:05:05Z","modified":"2026-09-22T10:04:56Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:16.096024Z"},{"id":"RHSA-2025:19734","title":"Red Hat Security Advisory: pcs security update","status":"published","published":"2025-11-05T10:05:06Z","modified":"2026-09-26T10:02:58Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:16.096024Z"},{"id":"RHSA-2025:19736","title":"Red Hat Security Advisory: pcs security update","status":"published","published":"2025-11-05T10:05:07Z","modified":"2026-09-22T10:04:57Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:16.096024Z"},{"id":"RHSA-2025:19800","title":"Red Hat Security Advisory: pcs security update","status":"published","published":"2025-11-06T10:06:09Z","modified":"2026-09-26T10:02:58Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:16.096024Z"},{"id":"RHSA-2025:19948","title":"Red Hat Security Advisory: pcs security update","status":"published","published":"2025-11-10T10:03:42Z","modified":"2026-09-26T10:03:00Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:16.096024Z"},{"id":"RHSA-2025:20962","title":"Red Hat Security Advisory: pcs security update","status":"published","published":"2025-11-12T10:28:19Z","modified":"2026-09-26T10:03:01Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:16.589982Z"},{"id":"RHSA-2025:21036","title":"Red Hat Security Advisory: pcs security update","status":"published","published":"2025-11-12T10:28:31Z","modified":"2026-09-26T10:03:01Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:16.589982Z"},{"id":"RHSA-2025:21696","title":"Red Hat Security Advisory: pcs security update","status":"published","published":"2025-11-19T10:08:57Z","modified":"2026-09-26T10:03:05Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:16.589982Z"},{"id":"RLSA-2025:19512","title":"Important: pcs security update","description":"The pcs packages provide a command-line configuration system for the Pacemaker and Corosync utilities.\n\nSecurity Fix(es):\n\n* rubygem-rack: Rack QueryParser has an unsafe default allowing params_limit bypass via semicolon-separated parameters (CVE-2025-59830)\n\n* rack: Rack's unbounded multipart preamble buffering enables DoS (memory exhaustion) (CVE-2025-61770)\n\n* rack: Rack's multipart parser buffers large non?file fields entirely in memory, enabling DoS (memory exhaustion) (CVE-2025-61771)\n\n* rack: Rack memory exhaustion denial of service (CVE-2025-61772)\n\n* rubygem-rack: Unbounded read in `Rack::Request` form parsing can lead to memory exhaustion (CVE-2025-61919)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.","status":"published","published":"2025-11-06T09:06:17.598112Z","modified":"2025-11-06T09:48:59.239427Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:25.216873Z"},{"id":"RLSA-2025:19719","title":"Important: pcs security update","description":"The pcs packages provide a command-line configuration system for the Pacemaker and Corosync utilities.\n\nSecurity Fix(es):\n\n* rubygem-rack: Rack QueryParser has an unsafe default allowing params_limit bypass via semicolon-separated parameters (CVE-2025-59830)\n\n* rack: Rack's unbounded multipart preamble buffering enables DoS (memory exhaustion) (CVE-2025-61770)\n\n* rack: Rack's multipart parser buffers large non?file fields entirely in memory, enabling DoS (memory exhaustion) (CVE-2025-61771)\n\n* rack: Rack memory exhaustion denial of service (CVE-2025-61772)\n\n* rubygem-rack: Unbounded read in `Rack::Request` form parsing can lead to memory exhaustion (CVE-2025-61919)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.","status":"published","published":"2025-11-05T09:00:57.474063Z","modified":"2025-11-05T09:48:03.231746Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:25.216873Z"},{"id":"RLSA-2025:20962","title":"Important: pcs security update","description":"The pcs packages provide a command-line configuration system for the Pacemaker and Corosync utilities.\n\nSecurity Fix(es):\n\n* rubygem-rack: Rack QueryParser has an unsafe default allowing params_limit bypass via semicolon-separated parameters (CVE-2025-59830)\n\n* rack: Rack's unbounded multipart preamble buffering enables DoS (memory exhaustion) (CVE-2025-61770)\n\n* rack: Rack's multipart parser buffers large non?file fields entirely in memory, enabling DoS (memory exhaustion) (CVE-2025-61771)\n\n* rack: Rack memory exhaustion denial of service (CVE-2025-61772)\n\n* rubygem-rack: Unbounded read in `Rack::Request` form parsing can lead to memory exhaustion (CVE-2025-61919)\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.","status":"published","published":"2025-11-21T18:14:11.535898Z","modified":"2025-11-21T18:49:07.134894Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:53:25.216873Z"},{"id":"UBUNTU-CVE-2025-61770","description":"Rack is a modular Ruby web server interface. In versions prior to 2.2.19, 3.1.17, and 3.2.2, `Rack::Multipart::Parser` buffers the entire multipart preamble (bytes before the first boundary) in memory without any size limit. A client can send a large preamble followed by a valid boundary, causing significant memory use and potential process termination due to out-of-memory (OOM) conditions. Remote attackers can trigger large transient memory spikes by including a long preamble in multipart/form-data requests. The impact scales with allowed request sizes and concurrency, potentially causing worker crashes or severe slowdown due to garbage collection. Versions 2.2.19, 3.1.17, and 3.2.2 enforce a preamble size limit (e.g., 16 KiB) or discard preamble data entirely. Workarounds include limiting total request body size at the proxy or web server level and monitoring memory and set per-process limits to prevent OOM conditions.","status":"published","published":"2025-10-07T15:16:00Z","modified":"2026-04-17T10:10:49.948409Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T16:55:50.817402Z"},{"id":"ALSA-2025:19719","title":"Important: pcs security update","description":"The pcs packages provide a command-line configuration system for the Pacemaker and Corosync utilities.  \n\nSecurity Fix(es):  \n\n  * rubygem-rack: Rack QueryParser has an unsafe default allowing params_limit bypass via semicolon-separated parameters (CVE-2025-59830)\n  * rack: Rack's unbounded multipart preamble buffering enables DoS (memory exhaustion) (CVE-2025-61770)\n  * rack: Rack's multipart parser buffers large non?file fields entirely in memory, enabling DoS (memory exhaustion) (CVE-2025-61771)\n  * rack: Rack memory exhaustion denial of service (CVE-2025-61772)\n  * rubygem-rack: Unbounded read in `Rack::Request` form parsing can lead to memory exhaustion (CVE-2025-61919)\n\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n","status":"published","published":"2025-11-04T00:00:00Z","modified":"2026-10-29T11:02:22.753089332Z","updated_at":"2026-11-02T15:27:53.448565Z"},{"id":"ALSA-2025:20962","title":"Important: pcs security update","description":"The pcs packages provide a command-line configuration system for the Pacemaker and Corosync utilities.  \n\nSecurity Fix(es):  \n\n  * rubygem-rack: Rack QueryParser has an unsafe default allowing params_limit bypass via semicolon-separated parameters (CVE-2025-59830)\n  * rack: Rack's unbounded multipart preamble buffering enables DoS (memory exhaustion) (CVE-2025-61770)\n  * rack: Rack's multipart parser buffers large non?file fields entirely in memory, enabling DoS (memory exhaustion) (CVE-2025-61771)\n  * rack: Rack memory exhaustion denial of service (CVE-2025-61772)\n  * rubygem-rack: Unbounded read in `Rack::Request` form parsing can lead to memory exhaustion (CVE-2025-61919)\n\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n","status":"published","published":"2025-11-11T00:00:00Z","modified":"2026-10-29T11:32:28.478886022Z","updated_at":"2026-11-02T15:27:53.448565Z"},{"id":"ALSA-2025:21036","title":"Important: pcs security update","description":"The pcs packages provide a command-line configuration system for the Pacemaker and Corosync utilities.  \n\nSecurity Fix(es):  \n\n  * rubygem-rack: Rack QueryParser has an unsafe default allowing params_limit bypass via semicolon-separated parameters (CVE-2025-59830)\n  * rack: Rack's unbounded multipart preamble buffering enables DoS (memory exhaustion) (CVE-2025-61770)\n  * rack: Rack's multipart parser buffers large non?file fields entirely in memory, enabling DoS (memory exhaustion) (CVE-2025-61771)\n  * rack: Rack memory exhaustion denial of service (CVE-2025-61772)\n  * rubygem-rack: Unbounded read in `Rack::Request` form parsing can lead to memory exhaustion (CVE-2025-61919)\n\n\nFor more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.\n","status":"published","published":"2025-11-11T00:00:00Z","modified":"2026-10-29T11:30:04.203427522Z","updated_at":"2026-11-02T15:27:53.448565Z"},{"id":"CLSA-2026-1790243751","title":"pcs: Fix of 10 CVEs","description":"- CVE-2025-46727: unbounded query parsing in bundled rack; a body of repeated\n  keys was parsed in full, exhausting memory. Capped by rack's new query\n  bytesize and parameter-count limits, which pcsd turns into an HTTP 400\n- CVE-2025-59830: the same unbounded query parse reached through ';' separated\n  query strings, which rack's parameter counter did not count\n- CVE-2025-61770: multipart parsing in bundled rack read the whole request body\n  searching for a boundary that never arrived\n- CVE-2025-61771: multipart parsing in bundled rack retained an unbounded\n  non-file field in memory\n- CVE-2025-61772: multipart mime part headers in bundled rack were read with no\n  size limit\n- CVE-2025-61919: Rack::Request#POST read the entire request body before any\n  limit applied, so a 64 MB body was fully buffered\n- CVE-2024-49761: quadratic regular expression in bundled rexml\n  BaseParser#unnormalize; a long run of zeros in a hex character reference made\n  the parser hang\n- CVE-2024-52804: quadratic cookie unquoting in bundled tornado\n  _unquote_cookie, which rescanned the value from each escape\n- CVE-2025-47287: malformed multipart/form-data in bundled tornado logged a\n  warning per bad part instead of rejecting the request, flooding the log\n- CVE-2026-31958: unbounded part count and part header size in bundled tornado\n  multipart parsing\n- Stop forwarding client HTTP headers from the Tornado front end to the Ruby\n  part of pcsd, which only ever needed the cookie and the content type","status":"published","published":"2026-09-24T09:56:11Z","modified":"2026-10-26T09:43:44.481328861Z","updated_at":"2026-11-02T15:43:48.28229Z"},{"id":"CLSA-2026-1790610331","title":"pcs: Fix of 10 CVEs","description":"- Update bundled rubygem rack to 2.2.20\n- CVE-2024-25126: fix ReDoS in Rack::MediaType content type parsing\n- CVE-2024-26141: fix response amplification from crafted Range headers\n- CVE-2024-26146: fix ReDoS in Accept and Forwarded header parsing\n- CVE-2025-46727: fix unbounded parameter count in Rack::QueryParser\n- CVE-2025-59830: fix params_limit bypass via semicolon-separated parameters\n- CVE-2025-61770: fix unbounded multipart preamble buffering\n- CVE-2025-61771: fix unbounded buffering of non-file multipart fields\n- CVE-2025-61772: fix unbounded multipart part header buffering\n- CVE-2025-61919: fix unbounded form body read in Rack::Request#POST\n- Handle Rack::QueryParser::QueryLimitError in pcsd, returning 400 instead of 500\n- CVE-2026-31958: cap multipart part count and part header size in bundled tornado\n- Disable multipart request parsing in pcsd, which does not use it\n- Drop i686 from ExclusiveArch: the bundled web UI needs npm at build time and\n  npm has no i686 build, so the i686 buildroot cannot be created","status":"published","published":"2026-09-28T15:45:52Z","modified":"2026-10-26T09:31:44.061952334Z","updated_at":"2026-11-02T15:43:48.65893Z"},{"id":"CLSA-2026-1790610419","title":"pcs: Fix of 10 CVEs","description":"- Update bundled rubygem rack to 2.2.20\n- CVE-2024-25126: fix ReDoS in Rack::MediaType content type parsing\n- CVE-2024-26141: fix response amplification from crafted Range headers\n- CVE-2024-26146: fix ReDoS in Accept and Forwarded header parsing\n- CVE-2025-46727: fix unbounded parameter count in Rack::QueryParser\n- CVE-2025-59830: fix params_limit bypass via semicolon-separated parameters\n- CVE-2025-61770: fix unbounded multipart preamble buffering\n- CVE-2025-61771: fix unbounded buffering of non-file multipart fields\n- CVE-2025-61772: fix unbounded multipart part header buffering\n- CVE-2025-61919: fix unbounded form body read in Rack::Request#POST\n- Handle Rack::QueryParser::QueryLimitError in pcsd, returning 400 instead of 500\n- CVE-2026-31958: cap multipart part count and part header size in bundled tornado\n- Disable multipart request parsing in pcsd, which does not use it\n- Drop i686 from ExclusiveArch: the bundled web UI needs npm at build time and\n  npm has no i686 build, so the i686 buildroot cannot be created","status":"published","published":"2026-09-28T15:47:19Z","modified":"2026-10-26T09:31:51.622041107Z","updated_at":"2026-11-02T15:43:48.65893Z"},{"id":"DLA-4357-1","title":"ruby-rack - security update","status":"published","published":"2025-11-01T00:00:00Z","modified":"2025-11-01T21:35:12.919574Z","updated_at":"2026-11-02T15:46:12.7027Z"},{"id":"DSA-6048-1","title":"ruby-rack - security update","status":"published","published":"2025-11-03T00:00:00Z","modified":"2025-11-03T22:17:32.07714Z","updated_at":"2026-11-02T15:46:18.296714Z"},{"id":"MGASA-2025-0334","title":"Updated ruby-rack packages fix security vulnerabilities","description":"Unbounded-Parameter DoS in Rack::QueryParser. (CVE-2025-46727)\nReDoS Vulnerability in Rack::Multipart handle_mime_head.\n(CVE-2025-49007)\nRack QueryParser has an unsafe default allowing params_limit bypass via\nsemicolon-separated parameters. (CVE-2025-59830)\nRack's unbounded multipart preamble buffering enables DoS (memory\nexhaustion). (CVE-2025-61770)\nRack's multipart parser buffers large non‑file fields entirely in\nmemory, enabling DoS (memory exhaustion). (CVE-2025-61771)\nRack's multipart parser buffers unbounded per-part headers, enabling DoS\n(memory exhaustion). (CVE-2025-61772)\nRack is vulnerable to a memory-exhaustion DoS through unbounded\nURL-encoded body parsing. (CVE-2025-61919)\nRack has Possible Information Disclosure Vulnerability. (CVE-2025-61780)\n","status":"published","published":"2025-12-29T20:41:12Z","modified":"2026-04-16T04:43:56.798658566Z","updated_at":"2026-11-02T15:49:43.178336Z"},{"id":"openSUSE-SU-2025:15621-1","title":"ruby3.4-rubygem-rack-2.2-2.2.19-1.1 on GA media","description":"These are all security issues fixed in the ruby3.4-rubygem-rack-2.2-2.2.19-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2025-10-09T00:00:00Z","modified":"2026-03-23T04:54:01.108282Z","updated_at":"2026-11-02T16:58:37.810934Z"},{"id":"openSUSE-SU-2026:10286-1","title":"ruby4.0-rubygem-rack-2.2-2.2.22-1.1 on GA media","description":"These are all security issues fixed in the ruby4.0-rubygem-rack-2.2-2.2.22-1.1 package on the GA media of openSUSE Tumbleweed.","status":"published","published":"2026-03-04T00:00:00Z","modified":"2026-03-23T04:54:39.054152Z","updated_at":"2026-11-02T16:58:38.101535Z"}]}}