Vulnerability · Published Nov 5, 2026 · Assigned by VulnCheck
CVE-2026-122310Kyverno 1.19.1 before 1.19.2 Privilege Escalation via Policy apiCall urlPath
Critical 9.9
In plain English
A critical-severity security flaw in kyverno from kyverno. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 30% of all known vulnerabilities).
Severity (CVSS 3.1)9.9Critical
Exploit odds (30 days)0.4%top 70.4% of all CVEs
Exploited in the wildNo reportsnot in CISA KEV
Attack toolingNoneno public tooling known
Official description
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 fragment or query the Kubernetes client discards. A namespace-scoped user who can create a Policy can hide ../ segments behind # or ? to reach cluster-scoped endpoints with Kyverno's ServiceAccount, gaining cluster admin.
Affected products (as reported)
Weakness: CWE-436 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
References
- GitHub Security Advisory (GHSA-3xfv-vq8x-qhg4) vendor-advisory
- VulnCheck Advisory: Kyverno 1.19.1 before 1.19.2 Privilege Escalation via Policy apiCall urlPath third-party-advisory