{"id":"CVE-2020-9494","aliases":["DEBIAN-CVE-2020-9494","DSA-4710-1","EUVD-2020-30301","GHSA-cw5m-934f-xqmc","UBUNTU-CVE-2020-9494"],"status":"published","title":"Apache Traffic Server 6.0.0 to 6.2.3, 7.0.0 to 7.1.10, and 8.0.0 to 8.0.7 is vulnerable to...","description":"Apache Traffic Server 6.0.0 to 6.2.3, 7.0.0 to 7.1.10, and 8.0.0 to 8.0.7 is vulnerable to certain types of HTTP/2 HEADERS frames that can cause the server to allocate a large amount of memory and spin the thread.","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":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.03669,"percentile":0.89732,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-119","CWE-770"],"published":"2020-06-24T15:25:57Z","modified":"2026-10-26T12:02:09Z","fixes":[{"ecosystem":"Debian:12","package":"trafficserver","fixed_in":["8.0.8+ds-1"],"sources":["osv"]},{"ecosystem":"Debian:10","package":"trafficserver","fixed_in":["8.0.2+ds-1+deb10u3"],"sources":["osv"]}],"affected":[{"source":"osv","ecosystem":"Debian:12","package":"trafficserver","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.0.8+ds-1"}]}]},{"source":"osv","ecosystem":"Debian:10","package":"trafficserver","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.0.2+ds-1+deb10u3"}]}],"versions":["8.0.2+ds-1","8.0.2+ds-1+deb10u1","8.0.2+ds-1+deb10u2"]},{"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"]}],"products":[{"vendor":"apache","product":"traffic_server"},{"vendor":"apache software foundation","product":"apache traffic server"},{"vendor":"debian","product":"debian_linux"}],"references":[{"url":"https://lists.apache.org/thread.html/rf7f86917f42fdaf904d99560cba0c016e03baea6244c47efeb60ecbe%40%3Cdev.trafficserver.apache.org%3E","tags":["x_refsource_CONFIRM","x_transferred","Mailing List","Vendor Advisory","advisory","report"]},{"url":"https://www.debian.org/security/2020/dsa-4710","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred","Third Party Advisory","advisory"]},{"url":"http://www.openwall.com/lists/oss-security/2021/03/01/2","tags":["mailing-list","x_refsource_MLIST","x_transferred","Not Applicable","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-9494"},{"url":"https://github.com/advisories/GHSA-cw5m-934f-xqmc"},{"url":"https://security-tracker.debian.org/tracker/CVE-2020-9494","tags":["advisory"]},{"url":"https://ubuntu.com/security/CVE-2020-9494","tags":["report"]},{"url":"https://ubuntu.com/security/notices/USN-5360-1","tags":["advisory"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2020-9494","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2020-9494","description":"Apache Traffic Server 6.0.0 to 6.2.3, 7.0.0 to 7.1.10, and 8.0.0 to 8.0.7 is vulnerable to certain types of HTTP/2 HEADERS frames that can cause the server to allocate a large amount of memory and spin the thread.","status":"published","published":"2020-06-24T15:25:57Z","modified":"2024-08-04T10:34:37.925Z","updated_at":"2026-11-02T14:35:49.538427Z"}],"euvd":[{"id":"EUVD-2020-30301","description":"Apache Traffic Server 6.0.0 to 6.2.3, 7.0.0 to 7.1.10, and 8.0.0 to 8.0.7 is vulnerable to 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thread.","status":"published","published":"2020-06-24T16:15:11.067Z","modified":"2026-10-24T10:30:28.866204228Z","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":"2026-11-02T15:44:17.663289Z"},{"id":"DEBIAN-CVE-2020-9494","description":"Apache Traffic Server 6.0.0 to 6.2.3, 7.0.0 to 7.1.10, and 8.0.0 to 8.0.7 is vulnerable to certain types of HTTP/2 HEADERS frames that can cause the server to allocate a large amount of memory and spin the thread.","status":"published","published":"2020-06-24T16:15:11.067Z","modified":"2026-10-26T12:02:09.500890859Z","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":"2026-11-02T15:45:34.311861Z"},{"id":"UBUNTU-CVE-2020-9494","description":"Apache Traffic Server 6.0.0 to 6.2.3, 7.0.0 to 7.1.10, and 8.0.0 to 8.0.7 is vulnerable to certain types of HTTP/2 HEADERS frames that can cause the server to allocate a large amount of memory and spin the thread.","status":"published","published":"2020-06-24T16:15:00Z","modified":"2026-04-22T12:44:38.507024Z","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":"2026-11-02T15:54:25.728622Z"},{"id":"DSA-4710-1","title":"trafficserver - security update","status":"published","published":"2020-06-27T00:00:00Z","modified":"2026-03-09T02:09:34.4221Z","updated_at":"2026-11-02T15:46:17.19998Z"}]}}