Traefik: Incomplete fix for CVE-2026-33433 + CVE-2026-39858 cross-cohort: headerField underscore-variant identity spoofing in BasicAuth / DigestAuth / ForwardAuth in github.com/traefik/traefik
Traefik: Incomplete fix for CVE-2026-33433 + CVE-2026-39858 cross-cohort: headerField underscore-variant identity spoofing in BasicAuth / DigestAuth / ForwardAuth in github.com/traefik/traefik
01
describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2026-54763US | critical10.0OT elevated | — | ||
Traefik is an HTTP reverse proxy and load balancer. Prior to v2.11.51, v3.6.22, and v3.7.6, Traefik's BasicAuth, DigestAuth, and ForwardAuth middlewares strip canonical-cased spoof… | ||||
02
references
External citations — patches, advisories, analysis.
- https://github.com/traefik/traefik/commit/108a5264473a2cbc8f12d6d691a3c6553cdf2c1bFIX
- https://github.com/traefik/traefik/pull/13262FIX
- https://github.com/traefik/traefik/releases/tag/v2.11.51WEB
- https://github.com/traefik/traefik/releases/tag/v3.6.22WEB
- https://github.com/traefik/traefik/releases/tag/v3.7.6WEB
- https://github.com/traefik/traefik/security/advisories/GHSA-x677-9fxg-v5c5ADVISORY
- https://nvd.nist.gov/vuln/detail/CVE-2026-54763ADVISORY
scry
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