{"action":"Upgrade io.netty:netty-handler-ssl-ocsp to 4.1.136.Final (4.1.x) or 4.2.16.Final (4.2.x) or later.","affected":[{"fixed":"4.2.16.Final","introduced":"4.2.0.Final"},{"fixed":"4.1.136.Final","introduced":"0"}],"component":"io.netty:netty-handler-ssl-ocsp","cve_ids":["CVE-2026-56821"],"ecosystem":"Maven","epss":0.00219,"exploited":false,"fixed_versions":["4.2.16.Final","4.1.136.Final"],"ghsa_id":"GHSA-g7hg-vrcf-mvmr","id":"tcs_01M5N8XP0ZASKHCR1BANDNRMPC","modified_at":"2026-09-10T03:50:52.144967568Z","published_at":"2026-07-22T21:46:39Z","references":["https://osv.dev/vulnerability/GHSA-g7hg-vrcf-mvmr","https://github.com/netty/netty/security/advisories/GHSA-g7hg-vrcf-mvmr","https://github.com/netty/netty","https://github.com/netty/netty/releases/tag/netty-4.1.136.Final","https://github.com/netty/netty/releases/tag/netty-4.2.16.Final"],"severity":{"label":"high","score":7.4},"sources":[{"source":"osv","source_id":"GHSA-g7hg-vrcf-mvmr","url":"https://osv.dev/vulnerability/GHSA-g7hg-vrcf-mvmr"}],"summary":"Netty: Out-of-date OCSP Responses Accepted by OcspServerCertificateValidator"}