Auth bypass in Kyverno
CVE-2026-122308
Kyverno before 1.19.2 contains an authorization bypass vulnerability in the Generation Handler that allows users with create/update permissions to trigger synchronized generate policies by spoofing internal generate.kyverno.io labels. Attackers can label a ConfigMap as managed-by kyverno with crafted policy, rule, and trigger labels to clone sensitive Secrets from restricted namespaces into their own namespace.
Vulnerability class: IDOR (Insecure Direct Object Reference)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- GitHub Security Advisory (GHSA-hg5v-hwm3-956r) (vendor-advisory)
- VulnCheck Advisory: Kyverno before 1.19.2 Label Spoofing via Generation Handler processRequest (third-party-advisory)
Frequently asked questions
- What is CVE-2026-122308?
- CVE-2026-122308 is a high-severity vulnerability in Kyverno, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 8.5/10. Published 2026-11-05.
- How severe is CVE-2026-122308?
- High severity. CVSS v3 base score is 8.5 out of 10.