CVE-2026-88012CWE-770denial-of-service

CVE-2026-88012

Medium · published September 10, 2026

CVSS v3.1
5.3
EPSS
1%
Percentile
43.0
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
5.3 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
CVSS v4.0
Not supplied
EPSS
0.00515 · 43.0th percentile
Weakness
CWE-770 · Allocation of Resources Without Limits or Throttling
Published
2026-09-10T20:18Z
Affected products (2)
ProductVersionsFixed in
traefik/traefik≥ 2.8.2, < 2.11.562.11.56
traefik/traefik≥ 3.0.0, < 3.7.123.7.12
References (5)
https://github.com/traefik/traefik/commit/a8d0bc425859dde7481a6c9a324e610b81d754d0 · [email protected]https://github.com/traefik/traefik/pull/13717 · [email protected]https://github.com/traefik/traefik/releases/tag/v2.11.56 · [email protected]https://github.com/traefik/traefik/releases/tag/v3.7.12 · [email protected]https://github.com/traefik/traefik/security/advisories/GHSA-7ghq-v6jf-g56c · [email protected]
EPSS history
Timeline
  • 12 SEP 03:22Z
    EPSS moved — → 0%
    epss
  • 10 SEP 15:35Z
    Traefik: respondingTimeouts.readTimeout is not applied to HTTP/3, leaving slow-body uploads unbounded
    cvelistv5