Traefik 2.11.0 before 2.11.58 and 3.0.0 before 3.7.14 stores its NTLM/Kerberos backend round tripper in a client-connection slot not keyed by…
Traefik 2.11.0 before 2.11.58 and 3.0.0 before 3.7.14 stores its NTLM/Kerberos backend round tripper in a client-connection slot not keyed by ServersTransport, so one service's TLS client configuration is reused for another service's backend. An unauthenticated client can arm the slot via a backend issuing an NTLM or Negotiate challenge, then reach another service on the same keep-alive connection, bypassing its root CAs, server name, and certificate verification.
Read at NIST National Vulnerability Database (CVE API 2.0)
- Vendor
- Microsoft
- Product
- Active Directory / Entra ID, Squid / HAProxy / Varnish
- CVSS
- 8.7
- EPSS
- 0.002 (p9)
- Exposure class
- Identity, Edge / VPN / firewall
Why it ranks 28 (Notable)
- CVSS 8.7 high
- Exposed product class: identity, edge / VPN / firewall
- Widely deployed vendor product (Microsoft)
- Recency: items published within 24 hours gain 15, within 72 hours 6, within 7 days 2.