CVE search · CVE-2026-114638

CVE-2026-114638

high 7.0

Traefik v3.7.0 before v3.7.14 contains an improper authentication vulnerability in the Kubernetes Ingress NGINX provider that merges client CAs when auth-tls-secret names collide after dot-to-dash normalization. Attackers holding certificates from another host's CA can access a host requiring its own client CA, while that host's legitimate clients are refused.

Open in the NVD CVE.org JSON

Status: Analyzed
Published: 2026-10-22
Last changed: 2026-10-27
Source: disclosure@vulncheck.com
Weakness: CWE-287

Severity

Version	Score	Vector	Source
CVSS 4.0	high 7.0	`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`	disclosure@vulncheck.comSecondary
CVSS 3.1	high 8.7	`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N`	disclosure@vulncheck.comSecondary

Affected products

Vendor and product from the NVD’s CPE applicability statements. Versions and conditions are on the NVD’s page.

traefik · traefik

References

https://github.com/traefik/traefik/security/advisories/GHSA-rv2h-qh7j-xrjwVendor Advisory
https://www.vulncheck.com/advisories/traefik-3.7.0-before-3.7.14-client-ca-mix-up-via-auth-tls-secret-name-collisionThird Party Advisory

CVE-2026-114638

Details

Severity

Affected products

References