CVE-2026-122305
7.7, highKyverno before 1.19.2 contains a denial of service vulnerability in substituteVariablesIfAny that allows low-privileged users to hang…
- CVSS
- 7.7, high high CVSS v3.1
- EPSS, next 30 days
- n/a
- Exploitation
- No public evidence
- Published
- 5 Nov 2026today
Description
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.
Details
- Vendor
- Kyverno
- Product
- kyverno
- Weakness
- CWE-835 (opens in a new tab)
- Status
- Received
- Updated
- 5 Nov 2026
- Assigner
- disclosure@vulncheck.com
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H
References 2
Advisories 1
The kind is read from NVD's tags where present and from the shape of the URL otherwise, so treat it as a hint.
Other Kyverno CVEs
Every Kyverno CVE we holdSame vendor in what we hold, not a known link between the flaws.
- CVE-2026-122302 kyverno Improper Privilege Management Vulnerability 9.8, critical
- CVE-2026-122303 kyverno Missing Authorization Vulnerability 9.9, critical
- CVE-2026-122304 kyverno Incorrect Authorization Vulnerability 9.9, critical
- CVE-2026-122310 Kyverno from 1.19.1 before 1.19.2 validates a Policy's context.apiCall urlPath after cleaning it but executes the raw path, whose… 9.9, critical
- CVE-2026-122311 kyverno Path Traversal Vulnerability 9.9, critical
- CVE-2026-122313 kyverno Improper Privilege Management Vulnerability 9.9, critical
- CVE-2026-122321 kyverno Time-of-Check Time-of-Use Race Condition Vulnerability 9.1, critical
- CVE-2026-122306 Kyverno before 1.19.2 contains a denial of service vulnerability that allows namespaced policy authors to exhaust admission controller… 7.7, high
Beyond this page
Is CVE-2026-122305 in your network?
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Assembled from the NVD 2.0 API, the CISA Known Exploited Vulnerabilities Catalog and FIRST EPSS. Scores are as of our last collection on 5 Nov 2026, not the live upstream state.