{"cve":"CVE-2026-23881","nvd":{"published":"2026-01-27T17:16:12.733","modified":"2026-06-17T10:22:14.887","status":"Analyzed","description":"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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","score":6.5},"cwes":["CWE-770"],"references":["https://github.com/kyverno/kyverno/commit/7a651be3a8c78dcabfbf4178b8d89026bf3b850f","https://github.com/kyverno/kyverno/commit/f5617f60920568a301740485472bf704892175b7","https://github.com/kyverno/kyverno/security/advisories/GHSA-r2rj-wwm5-x6mq"],"products":["kyverno:kyverno"],"source":"nvd","synced_at":"2026-10-19T22:21:16.563232421+00:00"},"epss":{"cve":"CVE-2026-23881","score":0.00618,"percentile":0.49631,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-r2rj-wwm5-x6mq","url":"https://osv.dev/vulnerability/GHSA-r2rj-wwm5-x6mq","summary":"Kyverno Denial of Service via Context Variable Amplification in Policy Engine","modified":"2026-09-10T03:50:59.084825635Z","packages":[{"ecosystem":"Go","name":"github.com/kyverno/kyverno","purl":"pkg:golang/github.com/kyverno/kyverno","ranges":["<1.15.3"],"fixed":["1.15.3"]},{"ecosystem":"Go","name":"github.com/kyverno/kyverno","purl":"pkg:golang/github.com/kyverno/kyverno","ranges":[">=1.16.0-rc.1 <1.16.3"],"fixed":["1.16.3"]}]},{"id":"GO-2026-4382","url":"https://osv.dev/vulnerability/GO-2026-4382","summary":"Kyverno Denial of Service via Context Variable Amplification in Policy Engine in github.com/kyverno/kyverno","modified":"2026-02-04T03:00:02.662743Z","packages":[{"ecosystem":"Go","name":"github.com/kyverno/kyverno","purl":"pkg:golang/github.com/kyverno/kyverno","ranges":["<1.15.3",">=1.16.0-rc.1 <1.16.3"],"fixed":["1.15.3","1.16.3"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}