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Version: v1.2.x

CVE-2026-54763

CVE Details

Visit the official vulnerability details page for CVE-2026-54763 to learn more.

Initial Publication

07/06/2026

Last Update

07/08/2026

Third Party Dependency

github.com/traefik/traefik/v3

NIST CVE Summary

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 spoofed identity headers before writing Traefik's own value, but do not account for underscore-variant header names, which many backends normalize identically to dashed forms. An attacker able to reach a protected route can inject an underscore-variant header that survives Traefik's stripping and reaches the backend alongside, or on the unauthenticated ForwardAuth authResponseHeaders path instead of, the value Traefik intended to set, spoofing identity or authorization context. This issue is fixed in versions v2.11.51, v3.6.22, and v3.7.6.

CVE Severity

10

Our Official Summary

Investigation is ongoing to determine how this vulnerability affects our products.

Status

Analyzed

Affected Products & Versions

VersionPaletteAIPaletteAI VerteX
1.2.1⚠️ Impacted⚠️ Impacted
1.1.8⚠️ Impacted⚠️ Impacted

Revision History

No revisions available.