Is there a public exploit for CVE-2026-114639?

No public exploit for CVE-2026-114639 was found in Exploit-DB, Metasploit, Nuclei templates or public proof-of-concept repositories. That is an absence of evidence rather than proof that none exists.

How severe is CVE-2026-114639?

CVE-2026-114639 scores CVSS 7 (v4.0), rated high. EPSS puts the chance of exploitation in the next 30 days at 0.3%.

What does CVE-2026-114639 affect?

CVE-2026-114639 affects traefik traefik.

7.0 High

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…

CVE-2026-114639

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.

Assessment

CVSS: 7 (v4.0)
Severity: High
EPSS: 0.3% chance of exploitation in the next 30 days
Known exploited: Not listed in CISA KEV
Exploit availability: Nothing found in Exploit-DB, Metasploit, Nuclei or public PoC repositories
Published: 22 October 2026
Last updated: 4 November 2026
Affected: traefik · traefik
Assigner: VulnCheck

CVSS vectorCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N

At the source

EUVD (ENISA)

References

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