CVE-2026-114641
lowTraefik 2.11.x before 2.11.58 and 3.x before 3.7.14 contains a race condition in NTLM and Kerberos (Negotiate) backend authentication, where the per-connection…
Vendor / product: Traefik — traefik
Traefik 2.11.x before 2.11.58 and 3.x before 3.7.14 contains a race condition in NTLM and Kerberos (Negotiate) backend authentication, where the per-connection sticky round tripper slot is read and written without synchronization. Remote attackers can send concurrent HTTP/2 or HTTP/3 requests over one connection to orphan backend connections, break connection-bound authentication, or crash Traefik.
CVSS
3.7
3.7 (CVSS v3.1)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L Severity source: NVD CVSS v3.1 (disclosure@vulncheck.com)
Timeline (UTC)
Published: 2026-10-22 02:16
Modified: 2026-10-28 19:17
NVD status: Analyzed
Last synced 12 hours ago
Verified against the source API 2026-10-28 19:26 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
traefik / traefik ≥2.11.0 <2.11.58, ≥3.0.0 <3.7.14
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
References
- https://github.com/traefik/traefik/security/advisories/GHSA-mhjw-hmjv-p99x disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/traefik-before-2.11.58-and-3.7.14-race-condition-in-n... disclosure@vulncheck.com
Data sources
NVD CVE API 2.0 — fetched 2026-10-28 19:26 UTC · record ↗