{"id":"CVE-2024-21510","aliases":["ALSA-2024:10987","DEBIAN-CVE-2024-21510","EUVD-2024-3268","GHSA-hxx2-7vcw-mqr3","RHSA-2024:10987","RLSA-2024:10987","UBUNTU-CVE-2024-21510"],"status":"published","title":"Sinatra vulnerable to Reliance on Untrusted Inputs in a Security Decision","description":"Versions of the package sinatra from 0.0.0 are vulnerable to Reliance on Untrusted Inputs in a Security Decision via the X-Forwarded-Host (XFH) header. When making a request to a method with redirect applied, it is possible to trigger an Open Redirect Attack by inserting an arbitrary address into this header. If used for caching purposes, such as with servers like Nginx, or as a reverse proxy, without handling the X-Forwarded-Host header, attackers can potentially exploit Cache Poisoning or Routing-based SSRF.","severity":{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00494,"percentile":0.42844,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-807"],"published":"2024-11-01T05:00:04Z","modified":"2026-11-02T12:00:57Z","fixes":[{"ecosystem":"RubyGems","package":"sinatra","fixed_in":["4.1.0"],"sources":["ghsa","osv"]},{"ecosystem":"AlmaLinux:8","package":"pcs","fixed_in":["0.10.18-2.el8_10.3.alma.1"],"sources":["osv"]},{"ecosystem":"AlmaLinux:8","package":"pcs-snmp","fixed_in":["0.10.18-2.el8_10.3.alma.1"],"sources":["osv"]},{"ecosystem":"Debian:13","package":"ruby-sinatra","fixed_in":["4.1.1-2"],"sources":["osv"]},{"ecosystem":"Debian:14","package":"ruby-sinatra","fixed_in":["4.1.1-2"],"sources":["osv"]},{"ecosystem":"Red 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Hat:enterprise_linux:8::highavailability","package":"pcs","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:0.10.18-2.el8_10.3"}]}]},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:8::highavailability","package":"pcs-snmp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:0.10.18-2.el8_10.3"}]}]},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:8::resilientstorage","package":"pcs","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:0.10.18-2.el8_10.3"}]}]},{"source":"osv","ecosystem":"Red Hat:enterprise_linux:8::resilientstorage","package":"pcs-snmp","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:0.10.18-2.el8_10.3"}]}]},{"source":"osv","ecosystem":"Rocky Linux:8","package":"pcs","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0:0.10.18-2.el8_10.3"}]}]},{"source":"osv","ecosystem":"Ubuntu:Pro:16.04:LTS","package":"ruby-sinatra","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.4.6-2","1.4.7-3","1.4.7-3ubuntu0.1~esm2","1.4.7-3ubuntu0.1~esm3"]},{"source":"osv","ecosystem":"Ubuntu:Pro:18.04:LTS","package":"ruby-sinatra","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.4.7-5","1.4.8-1","1.4.8-1ubuntu0.1~esm2","1.4.8-1ubuntu0.1~esm3"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"ruby-sinatra","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0.5-4ubuntu1","2.0.8.1-1","2.0.8.1-1ubuntu0.1~esm2","2.0.8.1-1ubuntu0.1~esm3"]},{"source":"osv","ecosystem":"Ubuntu:22.04:LTS","package":"ruby-sinatra","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.0.8.1-2","2.0.8.1-2+deb11u1build0.22.04.1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"ruby-sinatra","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.0.5-3","3.0.5-3ubuntu1"]}],"products":[{"vendor":"sinatra","product":"sinatra"}],"references":[{"url":"https://security.snyk.io/vuln/SNYK-RUBY-SINATRA-6483832","tags":["web","article","report"]},{"url":"https://github.com/sinatra/sinatra/blob/b626e2d82c23b4fde0b51782fd32ca27ccde1d1a/lib/sinatra/base.rb%23L319","tags":["web","article"]},{"url":"https://github.com/sinatra/sinatra/blob/b626e2d82c23b4fde0b51782fd32ca27ccde1d1a/lib/sinatra/base.rb%23L323C1-L343C17","tags":["web","article"]},{"url":"https://github.com/sinatra/sinatra/pull/2010","tags":["fix","web","article"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-21510","tags":["advisory"]},{"url":"https://github.com/sinatra/sinatra/blob/b626e2d82c23b4fde0b51782fd32ca27ccde1d1a/lib/sinatra/base.rb#L319","tags":["web"]},{"url":"https://github.com/sinatra/sinatra/blob/b626e2d82c23b4fde0b51782fd32ca27ccde1d1a/lib/sinatra/base.rb#L323C1-L343C17","tags":["web"]},{"url":"https://github.com/advisories/GHSA-hxx2-7vcw-mqr3","tags":["advisory"]},{"url":"https://github.com/rubysec/ruby-advisory-db/blob/master/gems/sinatra/CVE-2024-21510.yml","tags":["web"]},{"url":"https://github.com/sinatra/sinatra/blob/main/CHANGELOG.md#410--2024-11-18","tags":["web"]},{"url":"https://access.redhat.com/errata/RHSA-2024:10987","tags":["advisory"]},{"url":"https://access.redhat.com/security/cve/CVE-2024-21510","tags":["report"]},{"url":"https://bugzilla.redhat.com/2323117","tags":["report"]},{"url":"https://errata.almalinux.org/8/ALSA-2024-10987.html","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2024-21510","tags":["advisory"]},{"url":"https://github.com/sinatra/sinatra","tags":["package"]},{"url":"https://access.redhat.com/security/updates/classification/#moderate","tags":["article"]},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2323117","tags":["report"]},{"url":"https://security.access.redhat.com/data/csaf/v2/advisories/2024/rhsa-2024_10987.json","tags":["advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2024-21510","tags":["advisory","report"]},{"url":"https://errata.rockylinux.org/RLSA-2024:10987","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2024-21510","tags":["report"]},{"url":"https://github.com/sinatra/sinatra/pull/2053#issuecomment-2486996349","tags":["report"]},{"url":"https://github.com/rack/rack/commit/58eed3015d89249a3c48d144bbeabb01f69ea696","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2024-21510","description":"Versions of the package sinatra from 0.0.0 are vulnerable to Reliance on Untrusted Inputs in a Security Decision via the X-Forwarded-Host (XFH) header. When making a request to a method with redirect applied, it is possible to trigger an Open Redirect Attack by inserting an arbitrary address into this header. If used for caching purposes, such as with servers like Nginx, or as a reverse proxy, without handling the X-Forwarded-Host header, attackers can potentially exploit Cache Poisoning or Routing-based SSRF.","status":"published","published":"2024-11-01T05:00:04.821Z","modified":"2024-11-18T12:19:21.911Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P","level":"medium","assessor":"cna"}],"cwes":["CWE-807"],"updated_at":"2026-11-02T14:34:05.077718Z"}],"euvd":[{"id":"EUVD-2024-3268","description":"Versions of the package sinatra from 0.0.0 are vulnerable to Reliance on Untrusted Inputs in a Security Decision via the X-Forwarded-Host (XFH) header. When making a request to a method with redirect applied, it is possible to trigger an Open Redirect Attack by inserting an arbitrary address into this header. If used for caching purposes, such as with servers like Nginx, or as a reverse proxy, without handling the X-Forwarded-Host header, attackers can potentially exploit Cache Poisoning or Routing-based SSRF.","status":"published","published":"2024-11-01T05:00:04Z","modified":"2024-11-18T12:19:21Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P","level":"medium"}],"updated_at":"2026-11-03T00:04:57.661321Z"}],"ghsa":[{"id":"GHSA-hxx2-7vcw-mqr3","title":"Sinatra vulnerable to Reliance on Untrusted Inputs in a Security Decision","description":"Versions of the package sinatra from 0.0.0 are vulnerable to Reliance on Untrusted Inputs in a Security Decision via the X-Forwarded-Host (XFH) header. When making a request to a method with redirect applied, it is possible to trigger an Open Redirect Attack by inserting an arbitrary address into this header. If used for caching purposes, such as with servers like Nginx, or as a reverse proxy, without handling the X-Forwarded-Host header, attackers can potentially exploit Cache Poisoning or Routing-based SSRF.","status":"published","published":"2024-11-01T06:30:34Z","modified":"2024-11-18T20:17:33Z","cvss":[{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","level":"medium"},{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-807"],"updated_at":"2026-11-02T14:38:20.833758Z"}],"nvd":[{"id":"CVE-2024-21510","description":"Versions of the package sinatra from 0.0.0 are vulnerable to Reliance on Untrusted Inputs in a Security Decision via the X-Forwarded-Host (XFH) header. When making a request to a method with redirect applied, it is possible to trigger an Open Redirect Attack by inserting an arbitrary address into this header. If used for caching purposes, such as with servers like Nginx, or as a reverse proxy, without handling the X-Forwarded-Host header, attackers can potentially exploit Cache Poisoning or Routing-based SSRF.","status":"published","published":"2024-11-01T05:15:05.64Z","modified":"2026-06-17T07:09:38.693Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-807"],"updated_at":"2026-11-02T14:10:35.289159Z"}],"osv":[{"id":"CVE-2024-21510","description":"Versions of the package sinatra from 0.0.0 are vulnerable to Reliance on Untrusted Inputs in a Security Decision via the X-Forwarded-Host (XFH) header. When making a request to a method with redirect applied, it is possible to trigger an Open Redirect Attack by inserting an arbitrary address into this header. If used for caching purposes, such as with servers like Nginx, or as a reverse proxy, without handling the X-Forwarded-Host header, attackers can potentially exploit Cache Poisoning or Routing-based SSRF.","status":"published","published":"2024-11-01T05:15:05.64Z","modified":"2026-04-17T13:29:33.514094603Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:44:38.577405Z"},{"id":"DEBIAN-CVE-2024-21510","description":"Versions of the package sinatra from 0.0.0 are vulnerable to Reliance on Untrusted Inputs in a Security Decision via the X-Forwarded-Host (XFH) header. When making a request to a method with redirect applied, it is possible to trigger an Open Redirect Attack by inserting an arbitrary address into this header. If used for caching purposes, such as with servers like Nginx, or as a reverse proxy, without handling the X-Forwarded-Host header, attackers can potentially exploit Cache Poisoning or Routing-based SSRF.","status":"published","published":"2024-11-01T05:15:05.64Z","modified":"2026-11-02T12:00:57.502444467Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:45:41.849198Z"},{"id":"GHSA-hxx2-7vcw-mqr3","title":"Sinatra vulnerable to Reliance on Untrusted Inputs in a Security Decision","description":"Versions of the package sinatra from 0.0.0 are vulnerable to Reliance on Untrusted Inputs in a Security Decision via the X-Forwarded-Host (XFH) header. When making a request to a method with redirect applied, it is possible to trigger an Open Redirect Attack by inserting an arbitrary address into this header. If used for caching purposes, such as with servers like Nginx, or as a reverse proxy, without handling the X-Forwarded-Host header, attackers can potentially exploit Cache Poisoning or Routing-based SSRF.","status":"published","published":"2024-11-01T06:30:34Z","modified":"2026-09-10T03:50:20.789353543Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N","level":"medium"},{"version":"4.0","score":5.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N","level":"medium"}],"cwes":["CWE-807"],"updated_at":"2026-11-02T15:46:49.621585Z"},{"id":"RHSA-2024:10987","title":"Red Hat Security Advisory: pcs security update","status":"published","published":"2024-12-13T10:02:08Z","modified":"2026-08-07T10:12:54Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T15:53:12.787505Z"},{"id":"UBUNTU-CVE-2024-21510","description":"Versions of the package sinatra from 0.0.0 are vulnerable to Reliance on Untrusted Inputs in a Security Decision via the X-Forwarded-Host (XFH) header. When making a request to a method with redirect applied, it is possible to trigger an Open Redirect Attack by inserting an arbitrary address into this header. If used for caching purposes, such as with servers like Nginx, or as a reverse proxy, without handling the X-Forwarded-Host header, attackers can potentially exploit Cache Poisoning or Routing-based SSRF.","status":"published","published":"2024-11-01T05:15:00Z","modified":"2026-07-30T01:30:21.019051439Z","cvss":[{"version":"3.1","score":5.4,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N","level":"medium"}],"updated_at":"2026-11-02T16:54:42.68848Z"},{"id":"ALSA-2024:10987","title":"Moderate: 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  * sinatra: Open Redirect Vulnerability in Sinatra via X-Forwarded-Host Header (CVE-2024-21510)\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":"2024-12-12T00:00:00Z","modified":"2026-10-29T11:02:13.2776312Z","updated_at":"2026-11-02T15:27:52.553233Z"},{"id":"RLSA-2024:10987","title":"Moderate: 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* sinatra: Open Redirect Vulnerability in Sinatra via X-Forwarded-Host Header (CVE-2024-21510)\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":"2024-12-19T04:18:08.23123Z","modified":"2026-02-04T07:40:27.216806Z","updated_at":"2026-11-02T15:53:24.63379Z"}]}}