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Multiple vulnerabilities in Traefik (August 4, 2026)

unknown
Multiple vulnerabilities have been discovered in Traefik. They allow an attacker to cause security policy bypass.

CSIRTS triage

vendor: Traefikproduct: TraefikAuthentication bypass
What
Multiple vulnerabilities allowing security policy bypass in Traefik.
Who is affected
Traefik deployments across affected versions.
Urgency
High; policy bypass could allow unauthorized access or traffic manipulation.
Action
Update Traefik to the latest patched version.

AI-assisted analysis generated from the source advisory — verify against the original.

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Details

Source
CERT-FR Avis de sécurité (FR · national-cert · site)
Severity
unknown
Published
2026-08-04
Exploitation
Not in CISA KEV at last sync
Language
Machine-translated to English — verify against the original

Original advisory: https://www.cert.ssi.gouv.fr/avis/CERTFR-2026-AVI-0964/

Recent advisories for Traefik

A cluster of recent advisories against the same product widens the attack surface — attackers routinely chain freshly published CVEs on one product, so review these together.

More from CERT-FR Avis de sécurité