{"id":"CVE-2026-88012","summary":"Traefik: respondingTimeouts.readTimeout is not applied to HTTP/3, leaving slow-body uploads unbounded","details":"Traefik is an open source HTTP reverse proxy and load balancer. From 2.8.2 until 2.11.56 and 3.7.12, HTTP/3 entrypoints do not apply entryPoints..transport.respondingTimeouts.readTimeout because the timeout is enforced on a TCP connection and the HTTP/3 server has no corresponding QUIC stream deadline. An unauthenticated client can use a slow request body, trickling data indefinitely while holding a request and an upstream connection open and exhausting backends with bounded connection pools. This issue is fixed in 2.11.56 and 3.7.12.","aliases":["CVE-2026-88878","GHSA-7ghq-v6jf-g56c","GO-2026-6454"],"modified":"2026-09-27T18:26:40.343225217Z","published":"2026-09-10T15:35:12.851Z","related":["SUSE-SU-2026:23855-1","SUSE-SU-2026:23863-1","openSUSE-SU-2026:21897-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/88xxx/CVE-2026-88012.json","cna_assigner":"GitHub_M","cwe_ids":["CWE-770"]},"references":[{"type":"WEB","url":"https://github.com/traefik/traefik/releases/tag/v2.11.56"},{"type":"WEB","url":"https://github.com/traefik/traefik/releases/tag/v3.7.12"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/88xxx/CVE-2026-88012.json"},{"type":"ADVISORY","url":"https://github.com/traefik/traefik/security/advisories/GHSA-7ghq-v6jf-g56c"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-88012"},{"type":"FIX","url":"https://github.com/traefik/traefik/commit/a8d0bc425859dde7481a6c9a324e610b81d754d0"},{"type":"FIX","url":"https://github.com/traefik/traefik/pull/13717"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/traefik/traefik","events":[{"introduced":"23c26d64eeb72eaecaecedc31ca740e83304fde2"},{"fixed":"d87731461f0c7beb6fdbcc5a5655a44ce56e537a"},{"introduced":"d99d2f95e66a28ee8180634dc80fdf13ba68c62a"},{"fixed":"e8f398ee30ca5643158ea9094b701b8eae9849e5"},{"fixed":"a8d0bc425859dde7481a6c9a324e610b81d754d0"}],"database_specific":{"cpe":"cpe:2.3:a:traefik:traefik:*:*:*:*:*:*:*:*","extracted_events":[{"introduced":"2.8.2"},{"fixed":"2.11.56"},{"introduced":"3.0.0"},{"fixed":"3.7.12"}],"source":["CPE_RANGE","REFERENCES"]}}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-88012.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"}]}