CVE-2026-114639GHSA-QM9F-W54V-Q2QH
Traefik before 2.11.58 and 3.7.14 Authentication Bypass via Negotiate Connection Pool
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Fix
- Fixed in 2.11.58, 3.7.14
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
Summary
Traefik 2.11.0 before 2.11.58 and 3.0.0 before 3.7.14 contains an authentication bypass because a first request preauthenticated with an Authorization: Negotiate token authenticates a socket in the globally shared backend connection pool, which is never isolated. Unauthenticated attackers on separate frontend connections can be assigned that NTLM/Kerberos-bound socket and perform reads or writes with the victim's identity.
Timeline
- CVE published
- First seen by cve.now
Affected versions
- traefik traefik
From 2.11.0 · fixed in 2.11.58
- traefik traefik
From 3.0.0 · fixed in 3.7.14