| Package | Affected versions | Patched versions |
|---|---|---|
| traefik | ≥ 2.11.0, < 2.11.58≥ 3.0.0, < 3.7.14 | 2.11.583.7.14 |
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.
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