CVSS 4.0
8.3 highCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:HCVE-2026-122305
High (8.3) in kyverno kyverno.
Kyverno before 1.19.2 contains a denial of service vulnerability in substituteVariablesIfAny that allows low-privileged users to hang the admission webhook via self-referential variable templates. Attackers can create resources whose annotations re-introduce the embedded policy variable, causing unbounded substitution loops that exhaust CPU and memory and block cluster-wide admission.
Severity
CVSS 3.1
7.7 highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H- CWE
- CWE-835 Loop with Unreachable Exit Condition (Infinite Loop)
- Published
- Record from
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Affected
Versions
From the CNA's record in the CVE List.
| Product | Affected |
|---|---|
| kyverno | before 1.19.2 |