CVE-2026-114641
Traefik before 2.11.58 and 3.7.14 Race Condition in NTLM/Kerberos Round Tripper
CVSS Score
3.7
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-362 |
| Vendor | traefik |
| Product | traefik |
| Published | Oct 22, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
Low
Affected Versions
traefik / traefik
2.11.0 < 2.11.58
traefik / traefik
3.0.0 < 3.7.14