Allows namespace user to escalate to cluster-admin via Kyverno's ServiceAccount; affects many Kubernetes clusters using Kyverno and enables full cluster compromise.
CVE-2026-122310
Kyverno path validation bug lets namespace users escalate to cluster-admin.
do firstUpgrade to a fixed release: 1.19.2.
Is CVE-2026-122310 being exploited?
Not confirmed. CVE-2026-122310 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.36% probability of exploitation in the next 30 days.
How severe is CVE-2026-122310?
CVE-2026-122310 is rated Critical with a CVSS score of 9.4. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-122310?
Yes. A fix has been recorded for CVE-2026-122310. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-122310 affect?
CVE-2026-122310 affects Kyverno 1.19.1 (prior to 1.19.2), Kubernetes clusters running Kyverno admission controller. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-122310?
Upgrade Kyverno to 1.19.2 ASAP; audit/rotate Kyverno ServiceAccount tokens.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Namespace-scoped user can craft a Policy that causes Kyverno to access cluster endpoints and obtain cluster-admin privileges.
Immediate action required
- affected>= 1.19.1 and < 1.19.2
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.
timeline
- 5 Nov 2026Published
- 5 Nov 2026CVE record last updated · same day later
- 5 Nov 2026Analysed by vulneraibility.com · 1 day later
- Advisorygithub.com /kyverno/kyverno/security/advisories/GHSA-3xfv-vq8x-qhg4
- Advisoryvulncheck.com /advisories/kyverno-1.19.1-before-1.19.2-privilege-escalation-via-policy-apicall
sources
- CVE List (CVE.org): description, affected versions, references; CVE Terms of Use
- NVD: CVSS and CPE data
- FIRST EPSS: exploit probability and percentile
- Summary, impact and triage tags: written by our AI analysis pipeline from the sources above. Check them against the sources.