CVE-2026-122309: high-severity vulnerability in kyverno
Kyverno before 1.19.2 Denial of Service via Unbounded CEL Policy Evaluation Cost
Published
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 8.2epss 0.2%
Kyverno before 1.19.2 contains a denial of service vulnerability that allows namespace-scoped policy authors to exhaust CPU and memory by submitting CEL expressions evaluated without runtime cost limits. Attackers can create a NamespacedValidatingPolicy or NamespacedDeletingPolicy with nested map comprehensions over large ConfigMap fields to OOM-kill Kyverno pods and block cluster-wide admission.
CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H
Affected products
kyverno · kyvernoRelated CVEs — kyverno
In the same product, most dangerous first.
CVE-2025-46342HIGHKyverno vulnerable to bypass of policy rules that use namespace selectors in match statementsEPSS 0.8%CVE-2023-42814LOWDenial of service from malicious image manifest in kyvernoEPSS 0.7%CVE-2023-42815LOWDenial of service from malicious image manifest in kyvernoEPSS 0.7%CVE-2023-42813MEDIUMDenial of service from malicious manifest in kyvernoEPSS 0.7%CVE-2026-23881HIGHKyverno Denial of Service via Context Variable Amplification in Policy EngineEPSS 0.6%CVE-2026-100706CRITICALkyverno before 1.19.1 Privilege Escalation via Policy apiCall urlPathEPSS 0.6%