CVE-2026-71326
go github.com/traefik/traefik/v3VulnerabilityCVSS 2.1
Traefik: BasicAuth singleflight key collision allows authenticated identity spoofing
No public exploitation has been reported so far. No distribution fix is listed yet; apply vendor mitigations and monitor.
Recommended action: Track your distribution's security tracker and apply the fix as soon as it ships.
Severity metrics
CVSS 4.0 : 2.1 LOW
Attack vectorNetwork (remote)
Attack complexityLow
Attack requirementsPresent
Privileges requiredHigh
User interactionNone
Confidentiality impactLow
Integrity impactLow
Availability impactNone
Subsequent confidentialityNone
Subsequent integrityNone
Subsequent availabilityNone
Vector: AV:N/AC:L/AT:P/PR:H/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N
Affected & fixed versions by distribution
Versions are the native distribution strings (backport-aware): RHEL/Debian/SUSE backport fixes, so compare with the distro version comparator (dpkg / rpm / vercmp), not the upstream version.
No affected package in the tracked watchlist yet (Debian, Ubuntu, Arch, SUSE, Red Hat...). Triage may still be pending.