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Vulnerabilities / CVE-2026-85595

critical

CVE-2026-85595

github.com/traefik/traefik: Traefik before v2.11.55 and v3.0.0 through v3.7.10 Authentication Bypass via digestAuth

Published Modified CWE 287
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Red Hat9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Trivy's own label is CRITICAL. Rated critical by NVD, Red Hat.

Description

Traefik versions before v2.11.55 and versions v3.0.0 through v3.7.10 contain an authentication bypass vulnerability in the digestAuth middleware where unknown usernames receive an empty secret instead of rejection. Attackers can compute a valid digest response using the empty secret and arbitrary credentials to bypass authentication on any digestAuth-protected route without a valid username or password.

Affected packages and fixed versions

SourcePackageFixed in
minimostraefik-3, traefik-fips-33.7.11-r0
rapidfort alpine 3.20traefik3.7.11-r0
rapidfort alpine 3.21traefik3.7.11-r0
rapidfort alpine 3.22traefik3.7.11-r0
rapidfort alpine 3.23traefik3.7.11-r0
rapidfort alpine 3.24traefik3.7.11-r0
Show all 7 entries from 6 sources
SourcePackageFixed in
minimostraefik-33.7.11-r0
minimostraefik-fips-33.7.11-r0
rapidfort alpine 3.20traefik3.7.11-r0
rapidfort alpine 3.21traefik3.7.11-r0
rapidfort alpine 3.22traefik3.7.11-r0
rapidfort alpine 3.23traefik3.7.11-r0
rapidfort alpine 3.24traefik3.7.11-r0

References

Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.