CVE-2026-23881

HIGH7.7

Kyverno Denial of Service via Context Variable Amplification in Policy Engine

Published Jan 27, 2026

Modified 2 months ago

Details

Kyverno is a policy engine designed for cloud native platform engineering teams. Versions prior to 1.16.3 and 1.15.3 have unbounded memory consumption in Kyverno's policy engine that allows users with policy creation privileges to cause denial of service by crafting policies that exponentially amplify string data through context variables. Versions 1.16.3 and 1.15.3 contain a patch for the vulnerability.

References

WEB

https://github.com/kyverno/kyverno/commit/7a651be3a8c78dcabfbf4178b8d89026bf3b850f

WEB

https://github.com/kyverno/kyverno/commit/f5617f60920568a301740485472bf704892175b7

WEB

https://github.com/kyverno/kyverno/security/advisories/GHSA-r2rj-wwm5-x6mq

ADVISORY

https://www.cve.org/CVERecord?id=CVE-2026-23881

CVSS Analysis

CVSS v3.1

7.7