HTTP Request Smuggling Affecting traefik-3 package, versions <3.7.13-r0


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.44% (36th percentile)

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  • Snyk IDSNYK-MINIMOSLATEST-TRAEFIK3-19688416
  • published12 Sept 2026
  • disclosed10 Sept 2026

Introduced: 10 Sep 2026

CVE-2026-88009  (opens in a new tab)
CWE-444  (opens in a new tab)
CWE-1286  (opens in a new tab)

How to fix?

Upgrade Minimos:latest traefik-3 to version 3.7.13-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream traefik-3 package and not the traefik-3 package as distributed by Minimos. See How to fix? for Minimos:latest relevant fixed versions and status.

Traefik is an open source HTTP reverse proxy and load balancer. Prior to 2.11.57, and 3.7.13, Traefik accepts a rootless HTTP/1 request target that Go stores in URL.Opaque while leaving URL.Path empty. The rewriteRequestBuilder path evaluates routing, path sanitization, forwardAuth, encodedCharacters, and access logging against a path normalized to / but forwards URL.Opaque verbatim to the backend, allowing cross-vhost routing bypass, path-scoped authorization bypass, and access-log evasion when the backend interprets the opaque target as a path. This issue is fixed in 2.11.57 and 3.7.13.

CVSS Base Scores

version 3.1