CVE-2026-114638 - Traefik v3.7.0 before v3.7.14 Client CA Mix-up via auth-tls-secret Name Collision

CVE-2026-114638 - Traefik v3.7.0 before v3.7.14 Client CA Mix-up via auth-tls-secret Name Collision

https://cvefeed.io/rssfeed/latest.atom / Thu, 10/22/2026 - 05:11
CVE ID :CVE-2026-114638
Published : Oct. 22, 2026, 1:43 a.m. | 37 minutes ago
Description :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.
Severity: 8.7 | HIGH
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Kenya Education Network CERT(KENET-CERT) is a Cybersecurity Emergency Response Team and Co-ordination Center operated by the National Research and Education Network of Kenya. KENET-CERT coordination center promotes awareness on cybersecurity incidences as well as coordinates and assists member institutions in responding effectively to cyber security threats and incidences. KENET-CERT works closely with Kenya's National CIRT coordination center (CIRT/CC) as a sector CIRT for the academic institutions. KENET promotes use of ICT in Teaching, Learning and Research in Higher Education Institutions in Kenya. KENET aims to interconnect all the Universities, Tertiary and Research Institutions in Kenya by setting up a cost effective and sustainable private network with high speed access to the global Internet. KENET also facilitates electronic communication among students and faculties in member institutions, share learning and teaching resources by collaboration in Research and Development of Educational content.