{"action":"Upgrade github.com/cert-manager/cert-manager to 1.18.5 or later.","affected":[{"fixed":"1.18.5","introduced":"1.18.0"},{"fixed":"1.19.3","introduced":"1.19.0"}],"component":"github.com/cert-manager/cert-manager","cve_ids":["CVE-2026-25518"],"ecosystem":"Go","epss":0.00381,"exploited":false,"fixed_versions":["1.18.5","1.19.3"],"ghsa_id":"GHSA-gx3x-vq4p-mhhv","id":"tcs_01M5KGDJGS0TSHR29NJ4M5NDD3","modified_at":"2026-03-16T14:55:08.066990Z","published_at":"2026-02-19T17:28:55Z","references":["https://osv.dev/vulnerability/GO-2026-4399","https://github.com/cert-manager/cert-manager/security/advisories/GHSA-gx3x-vq4p-mhhv","https://github.com/cert-manager/cert-manager/commit/409fc24e539711a07aae45ed45abbe03dfdad2cc","https://github.com/cert-manager/cert-manager/commit/9a73a0b3853035827edd37ac463e4803ba10327d","https://github.com/cert-manager/cert-manager/commit/d4faed26ae12115cceb807cdc12507ebc28980e2","https://github.com/cert-manager/cert-manager/pull/8467","https://github.com/cert-manager/cert-manager/pull/8468","https://github.com/cert-manager/cert-manager/pull/8469"],"severity":{"label":"medium","score":5.9},"sources":[{"source":"osv","source_id":"GO-2026-4399","url":"https://osv.dev/vulnerability/GO-2026-4399"},{"source":"nvd","source_id":"CVE-2026-25518","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-25518"}],"summary":"DoS in cert-manager-controller via Specially Crafted DNS Response in github.com/cert-manager/cert-manager"}