CVE-2026-114638 Traefik - Authentication Bypass

Traefik v3.7.0 before v3.7.14 contains an improper authentication vulnerability caused by client CA merging in Kubernetes Ingress NGINX provider due to auth-tls-secret name collisions, letting attackers with certificates from another host's CA bypass authentication, exploit requires attacker to hold a certificate from another host's CA.

CVSS base score 8.7 /10
High
CISA KEV
Not listed
Public exploit
None known
EPSS
0.19% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Authentication Bypass
Impact
Broken Authentication
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
Published
22 October 2026
Updated
23 October 2026
Weakness
CWE-287

Vendor fix

Upgrade to version v3.7.14 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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