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CVE-2026-114637

7.0 high SSVC exploitation: none Analyzed
NVD · CVE.org

Traefik from v3.2.0 before v3.7.14 contains an authentication bypass vulnerability in the experimental FastProxy connection pool, which fails to pin NTLM/Negotiate-authenticated backend connections to their frontend connection. Unauthenticated clients can be handed a pooled keep-alive backend connection where a victim completed an NTLM or Negotiate handshake, letting them read victim data and act as that victim.

Fix

Patch, vendor advisory and mitigation references on NVD 1

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 8

  1. Cpes+1 CPE criteria (now 1)NVD modified 2026-10-27 14:17
  2. StatusPublished → AnalyzedNVD modified 2026-10-27 14:17
  3. StatusUndergoing Analysis → PublishedNVD modified 2026-10-22 01:43
  4. StatusPublished → Undergoing AnalysisNVD modified 2026-10-22 15:39
  5. StatusReceived → PublishedNVD modified 2026-10-22 01:43
  6. StatusPublished → ReceivedNVD modified 2026-10-22 02:16
  7. CVSS7.0 (v4.0, CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N) → 7.0 (v4.0, CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X)NVD modified 2026-10-22 02:16
  8. First seenCVSS 7.0 · traefikNVD modified 2026-10-22 01:43

Affected (CPE criteria) 1

  • cpe:2.3:a:traefik:traefik:*:*:*:*:*:*:*:*

References 2