{"id":"CVE-2025-49763","aliases":["DEBIAN-CVE-2025-49763","DSA-5948-1","EUVD-2025-18741","GHSA-jrg5-jw7r-rxg9","OESA-2025-1731","OESA-2025-1732","OESA-2025-1904","OESA-2026-1019","UBUNTU-CVE-2025-49763"],"status":"published","title":"Apache Traffic Server: Remote DoS via memory exhaustion in ESI Plugin","description":"ESI plugin does not have the limit for maximum inclusion depth, and that allows excessive memory consumption if malicious instructions are inserted.\n\nUsers can use a new setting for the plugin (--max-inclusion-depth) to limit it.\nThis issue affects Apache Traffic Server: from 10.0.0 through 10.0.5, from 9.0.0 through 9.2.10.\n\nUsers are recommended to upgrade to version 9.2.11 or 10.0.6,  which fixes the issue.","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":"adp","from":"cve"},"epss":{"day":"2026-11-11","score":0.00742,"percentile":0.55107,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-400"],"published":"2025-06-19T10:07:15Z","modified":"2026-10-28T02:30:59Z","fixes":[{"ecosystem":"Debian:12","package":"trafficserver","fixed_in":["9.2.5+ds-0+deb12u3"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"trafficserver","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.2.5+ds-0+deb12u3"}]}],"versions":["9.2.0+ds-2","9.2.0+ds-2+deb12u1","9.2.1+ds-1","9.2.2+ds-1","9.2.3+ds-1","9.2.3+ds-1+deb12u1","9.2.4+ds-0+deb12u1","9.2.4+ds-1","9.2.4+ds-2","9.2.5+ds-0+deb12u1","9.2.5+ds-0+deb12u2"]},{"source":"osv","ecosystem":"Debian:12","package":"trafficserver","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.2.5+ds-0+deb12u3"}]}],"versions":["9.2.0+ds-2","9.2.0+ds-2+deb12u1","9.2.1+ds-1","9.2.2+ds-1","9.2.3+ds-1","9.2.3+ds-1+deb12u1","9.2.4+ds-0+deb12u1","9.2.4+ds-1","9.2.4+ds-2","9.2.5+ds-0+deb12u1","9.2.5+ds-0+deb12u2"],"bundled":3},{"source":"osv","ecosystem":"openEuler:24.03-LTS-SP1","package":"trafficserver","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.2.11-1.oe2403sp1"}]}],"bundled":2},{"source":"osv","ecosystem":"openEuler:24.03-LTS","package":"trafficserver","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.2.11-1.oe2403"}]}],"bundled":2},{"source":"osv","ecosystem":"openEuler:24.03-LTS-SP2","package":"trafficserver","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.2.11-1.oe2403sp2"}]}],"bundled":2},{"source":"osv","ecosystem":"openEuler:20.03-LTS-SP4","package":"trafficserver","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"9.1.4-5.oe2003sp4"}]}],"bundled":3},{"source":"osv","ecosystem":"Ubuntu:16.04:LTS","package":"trafficserver","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.3.0-2ubuntu1","5.3.0-2ubuntu2"]},{"source":"osv","ecosystem":"Ubuntu:18.04:LTS","package":"trafficserver","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["7.0.0-5","7.1.2+ds-2","7.1.2+ds-2build1","7.1.2+ds-3"]},{"source":"osv","ecosystem":"Ubuntu:Pro:20.04:LTS","package":"trafficserver","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["8.0.5+ds-1","8.0.5+ds-2","8.0.5+ds-2build1","8.0.5+ds-2ubuntu1","8.0.5+ds-3","8.0.5+ds-3ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:Pro:22.04:LTS","package":"trafficserver","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["8.1.1+ds-1.1","9.1.1+ds-2build1","9.1.1+ds-2ubuntu0.1~esm1","9.1.1+ds-2ubuntu0.1","9.1.1+ds-2ubuntu0.1+esm1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"trafficserver","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["9.2.1+ds-1build1","9.2.2+ds-1","9.2.3+ds-1","9.2.3+ds-1+deb12u1","9.2.3+ds-1+deb12u1build1","9.2.3+ds-1+deb12u1build3","9.2.3+ds-1+deb12u1build4","9.2.3+ds-1+deb12u1ubuntu0.1"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"trafficserver","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["9.2.5+ds-1ubuntu1","9.2.5+ds-1ubuntu2","9.2.5+ds-1ubuntu2.1"]}],"products":[{"vendor":"apache","product":"traffic_server"},{"vendor":"apache software foundation","product":"apache traffic server"}],"references":[{"url":"https://lists.apache.org/thread/15t32nxbypqg1m2smp640vjx89o6v5f8","tags":["vendor-advisory","Mailing List","Vendor Advisory","advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-49763","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-jrg5-jw7r-rxg9"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/49xxx/CVE-2025-49763.json","tags":["advisory"]},{"url":"https://security-tracker.debian.org/tracker/CVE-2025-49763","tags":["advisory"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2025-1731","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-31698","tags":["advisory"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2025-1732","tags":["advisory"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2025-1904","tags":["advisory"]},{"url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1019","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-38479","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-50305","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2025-49763","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-49763","tags":["report"]},{"url":"https://www.openwall.com/lists/oss-security/2025/06/17/7","tags":["report"]},{"url":"https://github.com/apache/trafficserver/commit/2db8b8dc96e57fc292850f77b9783630cc9590b9","tags":["report"]},{"url":"https://github.com/apache/trafficserver/commit/7f178de7de19498c1c320ea9b62c2f32355f3893","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2025-49763","title":"Apache Traffic Server: Remote DoS via memory exhaustion in ESI Plugin","description":"ESI plugin does not have the limit for maximum inclusion depth, and that allows excessive memory consumption if malicious instructions are inserted.\n\nUsers can use a new setting for the plugin (--max-inclusion-depth) to limit it.\nThis issue affects Apache Traffic Server: from 10.0.0 through 10.0.5, from 9.0.0 through 9.2.10.\n\nUsers are recommended to upgrade to version 9.2.11 or 10.0.6,  which fixes the issue.","status":"published","published":"2025-06-19T10:07:15.45Z","modified":"2025-06-20T13:56:54.082Z","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":"adp"}],"cwes":["CWE-400"],"updated_at":"2026-11-02T14:32:25.186422Z"}],"euvd":[{"id":"EUVD-2025-18741","description":"ESI plugin does not have the limit for maximum inclusion depth, and that allows excessive memory consumption if malicious instructions are inserted.\n\nUsers can use a new setting for the plugin (--max-inclusion-depth) to limit it.\nThis issue affects Apache Traffic Server: from 10.0.0 through 10.0.5, from 9.0.0 through 9.2.10.\n\nUsers are recommended to upgrade to version 9.2.11 or 10.0.6,  which fixes the issue.","status":"published","published":"2025-06-19T10:07:15Z","modified":"2025-06-20T13:56:54Z","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":"2026-11-02T20:32:19.507179Z"}],"ghsa":[{"id":"GHSA-jrg5-jw7r-rxg9","title":"ESI plugin does not have the limit for maximum inclusion depth, and that allows excessive memory...","description":"ESI plugin does not have the limit for maximum inclusion depth, and that allows excessive memory consumption if malicious instructions are inserted.\n\nUsers can use a new setting for the plugin (--max-inclusion-depth) to limit it.\nThis issue affects Apache Traffic Server: from 10.0.0 through 10.0.5, from 9.0.0 through 9.2.10.\n\nUsers are recommended to upgrade to version 9.2.11 or 10.0.6,  which fixes the issue.","status":"published","published":"2025-06-19T12:30:33Z","modified":"2025-06-20T15:31:44Z","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":"2026-11-02T15:02:46.844129Z"}],"nvd":[{"id":"CVE-2025-49763","description":"ESI plugin does not have the limit for maximum inclusion depth, and that allows excessive memory consumption if malicious instructions are inserted.\n\nUsers can use a new setting for the plugin (--max-inclusion-depth) to limit it.\nThis issue affects Apache Traffic Server: from 10.0.0 through 10.0.5, from 9.0.0 through 9.2.10.\n\nUsers are recommended to upgrade to version 9.2.11 or 10.0.6,  which fixes the issue.","status":"published","published":"2025-06-19T10:15:21.887Z","modified":"2026-06-17T09:31:55.277Z","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":"2026-11-02T14:11:13.247441Z"}],"osv":[{"id":"CVE-2025-49763","title":"Apache Traffic Server: Remote DoS via memory exhaustion in ESI Plugin","description":"ESI plugin does not have the limit for maximum inclusion depth, and that allows excessive memory consumption if malicious instructions are inserted.\n\nUsers can use a new setting for the plugin (--max-inclusion-depth) to limit it.\nThis issue affects Apache Traffic Server: from 10.0.0 through 10.0.5, from 9.0.0 through 9.2.10.\n\nUsers are recommended to upgrade to version 9.2.11 or 10.0.6,  which fixes the issue.","status":"published","published":"2025-06-19T10:07:15.45Z","modified":"2026-10-28T02:30:59.965325855Z","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":"2026-11-02T15:44:50.037003Z"},{"id":"DEBIAN-CVE-2025-49763","description":"ESI plugin does not have the limit for maximum inclusion depth, and that allows excessive memory consumption if malicious instructions are inserted.  Users can use a new setting for the plugin (--max-inclusion-depth) to limit it. This issue affects Apache Traffic Server: from 10.0.0 through 10.0.5, from 9.0.0 through 9.2.10.  Users are recommended to upgrade to version 9.2.11 or 10.0.6,  which fixes the issue.","status":"published","published":"2025-06-19T10:15:21.887Z","modified":"2026-09-01T20:05:53.270788852Z","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":"2026-11-02T15:45:47.378563Z"},{"id":"OESA-2025-1731","title":"trafficserver security update","description":"Apache Traffic Server is an OpenSource HTTP / HTTPS / HTTP/2 / QUIC reverse,\nforward and transparent proxy and cache.\r\n\r\nSecurity Fix(es):\n\nApache Traffic Server (ATS) is a set of scalable HTTP proxy and caching servers from the Apache Foundation in the United States.\n Apache Traffic Server (ATS) versions 10.0.0 to 10.0.6 and 9.0.0 to 9.2.10 have access control error vulnerabilities due to the ACL configuration not using the IP address provided by the PROXY protocol.(CVE-2025-31698)\n\nESI plugin does not have the limit for maximum inclusion depth, and that allows excessive memory consumption if malicious instructions are inserted.\n\nUsers can use a new setting for the plugin (--max-inclusion-depth) to limit it.\nThis issue affects Apache Traffic Server: from 10.0.0 through 10.0.5, from 9.0.0 through 9.2.10.\n\nUsers are recommended to upgrade to version 9.2.11 or 10.0.6,  which fixes the issue.(CVE-2025-49763)","status":"published","published":"2025-07-04T11:08:49Z","modified":"2026-08-18T01:18:52.921404687Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T15:52:42.714349Z"},{"id":"OESA-2025-1732","title":"trafficserver security update","description":"Apache Traffic Server is an OpenSource HTTP / HTTPS / HTTP/2 / QUIC reverse,\nforward and transparent proxy and cache.\r\n\r\nSecurity Fix(es):\n\nApache Traffic Server (ATS) is a set of scalable HTTP proxy and caching servers from the Apache Foundation in the United States.\n Apache Traffic Server (ATS) versions 10.0.0 to 10.0.6 and 9.0.0 to 9.2.10 have access control error vulnerabilities due to the ACL configuration not using the IP address provided by the PROXY protocol.(CVE-2025-31698)\n\nESI plugin does not have the limit for maximum inclusion depth, and that allows excessive memory consumption if malicious instructions are inserted.\n\nUsers can use a new setting for the plugin (--max-inclusion-depth) to limit it.\nThis issue affects Apache Traffic Server: from 10.0.0 through 10.0.5, from 9.0.0 through 9.2.10.\n\nUsers are recommended to upgrade to version 9.2.11 or 10.0.6,  which fixes the issue.(CVE-2025-49763)","status":"published","published":"2025-07-04T11:08:49Z","modified":"2026-08-18T01:18:51.927333203Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T15:52:42.714349Z"},{"id":"OESA-2025-1904","title":"trafficserver security update","description":"Apache Traffic Server is an OpenSource HTTP / HTTPS / HTTP/2 / QUIC reverse,\nforward and transparent proxy and cache.\r\n\r\nSecurity Fix(es):\n\nApache Traffic Server (ATS) is a set of scalable HTTP proxy and caching servers from the Apache Foundation in the United States.\n Apache Traffic Server (ATS) versions 10.0.0 to 10.0.6 and 9.0.0 to 9.2.10 have access control error vulnerabilities due to the ACL configuration not using the IP address provided by the PROXY protocol.(CVE-2025-31698)\n\nESI plugin does not have the limit for maximum inclusion depth, and that allows excessive memory consumption if malicious instructions are inserted.\n\nUsers can use a new setting for the plugin (--max-inclusion-depth) to limit it.\nThis issue affects Apache Traffic Server: from 10.0.0 through 10.0.5, from 9.0.0 through 9.2.10.\n\nUsers are recommended to upgrade to version 9.2.11 or 10.0.6,  which fixes the issue.(CVE-2025-49763)","status":"published","published":"2025-07-25T11:08:59Z","modified":"2026-08-18T01:18:55.61016469Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","level":"high"}],"updated_at":"2026-11-02T15:52:43.127925Z"},{"id":"OESA-2026-1019","title":"trafficserver security update","description":"Apache Traffic Server is an OpenSource HTTP / HTTPS / HTTP/2 / QUIC reverse, forward and transparent proxy and cache.\r\n\r\nSecurity Fix(es):\n\nImproper Input Validation vulnerability in Apache Traffic Server.This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, from 9.0.0 through 9.2.5.Users are recommended to upgrade to version 9.2.6, which fixes the issue, or 10.0.2, which does not have the issue.(CVE-2024-38479)\n\nValid Host header field can cause Apache Traffic Server to crash on some platforms.\n\nThis issue affects Apache Traffic Server: from 9.2.0 through 9.2.5.\n\nUsers are recommended to upgrade to version 9.2.6, which fixes the issue, or 10.0.2, which does not have the issue.(CVE-2024-50305)\n\nESI plugin does not have the limit for maximum inclusion depth, and that allows excessive memory consumption if malicious instructions are inserted.Users can use a new setting for the plugin (--max-inclusion-depth) to limit it.This issue affects Apache Traffic Server: from 10.0.0 through 10.0.5, from 9.0.0 through 9.2.10.Users are recommended to upgrade to version 9.2.11 or 10.0.6,  which fixes the issue.(CVE-2025-49763)","status":"published","published":"2026-01-09T11:10:03Z","modified":"2026-08-18T01:19:25.408150089Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N","level":"high"}],"updated_at":"2026-11-02T15:52:45.339366Z"},{"id":"UBUNTU-CVE-2025-49763","description":"ESI plugin does not have the limit for maximum inclusion depth, and that allows excessive memory consumption if malicious instructions are inserted. Users can use a new setting for the plugin (--max-inclusion-depth) to limit it. This issue affects Apache Traffic Server: from 10.0.0 through 10.0.5, from 9.0.0 through 9.2.10. Users are recommended to upgrade to version 9.2.11 or 10.0.6,  which fixes the issue.","status":"published","published":"2025-06-19T10:15:00Z","modified":"2026-04-22T16:03:34.584159Z","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":"2026-11-02T16:55:50.31802Z"},{"id":"DSA-5948-1","title":"trafficserver - security update","status":"published","published":"2025-06-24T00:00:00Z","modified":"2026-03-09T02:10:48.351124Z","updated_at":"2026-11-02T15:46:18.296714Z"}]}}