{"id":"CVE-2022-39271","aliases":["EUVD-2022-7073","GHSA-c6hx-pjc3-7fqr"],"status":"published","title":"Traefik HTTP/2 connections management could cause a denial of service","description":"Traefik (pronounced traffic) is a modern HTTP reverse proxy and load balancer that assists in deploying microservices. There is a potential vulnerability in Traefik managing HTTP/2 connections. A closing HTTP/2 server connection could hang forever because of a subsequent fatal error. This failure mode could be exploited to cause a denial of service. There has been a patch released in versions 2.8.8 and 2.9.0-rc5. There are currently no known workarounds.","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":"2026-11-10","score":0.0136,"percentile":0.7196,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":true},"cwes":["CWE-400","CWE-755"],"published":"2022-10-10T21:23:30Z","modified":"2026-10-28T02:31:13Z","fixes":[{"ecosystem":"Go","package":"github.com/traefik/traefik/v2","fixed_in":["2.8.8","2.9.0-rc5"],"sources":["ghsa","osv"]}],"affected":[{"source":"ghsa","ecosystem":"Go","package":"github.com/traefik/traefik/v2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.8.8"}]}]},{"source":"ghsa","ecosystem":"Go","package":"github.com/traefik/traefik/v2","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"2.9.0-rc1"},{"fixed":"2.9.0-rc5"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/traefik/traefik/v2","ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"2.8.8"}]}]},{"source":"osv","ecosystem":"Go","package":"github.com/traefik/traefik/v2","ranges":[{"type":"SEMVER","events":[{"introduced":"2.9.0-rc1"},{"fixed":"2.9.0-rc5"}]}]}],"products":[{"vendor":"traefik","product":"traefik"}],"references":[{"url":"https://github.com/traefik/traefik/security/advisories/GHSA-c6hx-pjc3-7fqr","tags":["x_transferred","Patch","Third Party Advisory","advisory","web"]},{"url":"https://github.com/traefik/traefik/releases/tag/v2.8.8","tags":["x_transferred","Release Notes","Third Party Advisory","web"]},{"url":"https://github.com/traefik/traefik/releases/tag/v2.9.0-rc5","tags":["x_transferred","Release Notes","Third Party Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2022-39271","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-c6hx-pjc3-7fqr"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/39xxx/CVE-2022-39271.json","tags":["advisory"]},{"url":"https://github.com/traefik/traefik","tags":["package"]}],"sources":{"cve":[{"id":"CVE-2022-39271","title":"Traefik HTTP/2 connections management could cause a denial of service","description":"Traefik (pronounced traffic) is a modern HTTP reverse proxy and load balancer that assists in deploying microservices. There is a potential vulnerability in Traefik managing HTTP/2 connections. A closing HTTP/2 server connection could hang forever because of a subsequent fatal error. This failure mode could be exploited to cause a denial of service. There has been a patch released in versions 2.8.8 and 2.9.0-rc5. There are currently no known workarounds.","status":"published","published":"2022-10-11T00:00:00Z","modified":"2025-04-23T16:51:43.774Z","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":"2026-11-02T14:34:39.559326Z"}],"euvd":[{"id":"EUVD-2022-7073","description":"Traefik (pronounced traffic) is a modern HTTP reverse proxy and load balancer that assists in deploying microservices. There is a potential vulnerability in Traefik managing HTTP/2 connections. A closing HTTP/2 server connection could hang forever because of a subsequent fatal error. This failure mode could be exploited to cause a denial of service. There has been a patch released in versions 2.8.8 and 2.9.0-rc5. There are currently no known workarounds.","status":"published","published":"2022-10-11T00:00:00Z","modified":"2025-04-23T16:51:43Z","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":"2026-11-02T20:52:11.891054Z"}],"ghsa":[{"id":"GHSA-c6hx-pjc3-7fqr","title":"Traefik HTTP/2 connections management could cause a denial of service","description":"### Impact\n\nThere is a potential vulnerability in Traefik managing HTTP/2 connections.\nA closing HTTP/2 server connection could hang forever because of a subsequent fatal error. This failure mode could be exploited to cause a denial of service.\n\n### Patches\n\nTraefik v2.8.x: https://github.com/traefik/traefik/releases/tag/v2.8.8\nTraefik v2.9.x: https://github.com/traefik/traefik/releases/tag/v2.9.0-rc5\n\n### Workarounds\n\nNo workaround.\n\n### For more information\n\nIf you have any questions or comments about this advisory, please [open an issue](https://github.com/traefik/traefik/issues).\n","status":"published","published":"2022-10-10T21:23:30Z","modified":"2023-07-14T19:41:13Z","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","CWE-755"],"updated_at":"2026-11-02T14:36:57.310051Z"}],"nvd":[{"id":"CVE-2022-39271","description":"Traefik (pronounced traffic) is a modern HTTP reverse proxy and load balancer that assists in deploying microservices. There is a potential vulnerability in Traefik managing HTTP/2 connections. A closing HTTP/2 server connection could hang forever because of a subsequent fatal error. This failure mode could be exploited to cause a denial of service. There has been a patch released in versions 2.8.8 and 2.9.0-rc5. There are currently no known workarounds.","status":"published","published":"2022-10-11T14:15:09.883Z","modified":"2026-06-17T04:58:02.643Z","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"},{"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"}],"cwes":["CWE-400","CWE-755"],"updated_at":"2026-11-02T14:07:29.026521Z"}],"osv":[{"id":"CVE-2022-39271","title":"Traefik HTTP/2 connections management could cause a denial of service","description":"Traefik (pronounced traffic) is a modern HTTP reverse proxy and load balancer that assists in deploying microservices. There is a potential vulnerability in Traefik managing HTTP/2 connections. A closing HTTP/2 server connection could hang forever because of a subsequent fatal error. This failure mode could be exploited to cause a denial of service. There has been a patch released in versions 2.8.8 and 2.9.0-rc5. There are currently no known workarounds.","status":"published","published":"2022-10-11T00:00:00Z","modified":"2026-10-28T02:31:13.18748748Z","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":"2026-11-02T15:44:26.860704Z"},{"id":"GHSA-c6hx-pjc3-7fqr","title":"Traefik HTTP/2 connections management could cause a denial of service","description":"### Impact\n\nThere is a potential vulnerability in Traefik managing HTTP/2 connections.\nA closing HTTP/2 server connection could hang forever because of a subsequent fatal error. This failure mode could be exploited to cause a denial of service.\n\n### Patches\n\nTraefik v2.8.x: https://github.com/traefik/traefik/releases/tag/v2.8.8\nTraefik v2.9.x: https://github.com/traefik/traefik/releases/tag/v2.9.0-rc5\n\n### Workarounds\n\nNo workaround.\n\n### For more information\n\nIf you have any questions or comments about this advisory, please [open an issue](https://github.com/traefik/traefik/issues).\n","status":"published","published":"2022-10-10T21:23:30Z","modified":"2023-11-08T04:10:17.311008Z","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","CWE-755"],"updated_at":"2026-11-02T15:46:44.571161Z"}]}}