CVE-2026-100707 - Kyverno before 1.19.1 Namespace Isolation Bypass via Percent-Encoded Path

CVE-2026-100707 - Kyverno before 1.19.1 Namespace Isolation Bypass via Percent-Encoded Path

https://cvefeed.io/rssfeed/latest.atom / Sat, 09/26/2026 - 19:49
CVE ID :CVE-2026-100707
Published : Sept. 26, 2026, 2:16 p.m. | 2 hours, 54 minutes ago
Description :Kyverno before 1.19.1 contains a namespace isolation bypass in the apiCall context entry of namespaced Policy resources due to inconsistent path interpretation between validation and execution. A low-privilege tenant can use percent-encoded dot-segments in urlPath to bypass namespace checks and read resources from other namespaces using the Kyverno admission controller's ServiceAccount credentials.
Severity: 8.3 | 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.