CVE-2026-100706kyverno before 1.19.1 Privilege Escalation via Policy apiCall urlPath
Updated under an hour ago ()
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It affects kyverno. Add what you run to find out whether that includes you.
EPSS puts the chance of exploitation in the next 30 days at 0.61%, higher than 48% of scored CVEs.
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kyverno before 1.19.1 fails to properly validate URL-encoded path segments in Policy apiCall urlPath, allowing namespace tenants to bypass the per-namespace clamp and create objects in other namespaces as the admission-controller ServiceAccount. Attackers can exploit this by using percent-encoded directory traversal sequences to create MutatingWebhookConfiguration objects cluster-wide or PolicyException objects in the kyverno namespace, enabling privilege escalation to cluster admin.
- CVSS
- 9.9 CRITICAL (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- Weakness (CWE)
- CWE-441
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- 0.61% (percentile 48)
- Assigned by
- VulnCheck
- NVD analysis
- Awaiting Analysis
- Record last updated
- Sep 26, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
kyverno kyverno kyverno:kyverno (from the name) | before 1.19.1; 1.19.1 not affected | CNA record |
References
- https://github.com/kyverno/kyverno/security/advisories/GHSA-5qq8-67g6-4h2wvendor-advisory
- https://www.vulncheck.com/advisories/kyverno-before-1.19.1-privilege-escalation-via-policy-apicall-urlpaththird-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.