{"action":"Upgrade io.netty:netty-codec-http to 4.1.137.Final (4.1.x) or 4.2.17.Final (4.2.x) or later.","affected":[{"fixed":"4.2.17.Final","introduced":"4.2.0.Final"},{"fixed":"4.1.137.Final","introduced":"0"}],"component":"io.netty:netty-codec-http","cve_ids":["CVE-2026-59903"],"ecosystem":"Maven","epss":0.00324,"exploited":false,"fixed_versions":["4.2.17.Final","4.1.137.Final"],"ghsa_id":"GHSA-8c42-7qj2-3j46","id":"tcs_01M5N8MEJ9BP20117F94SF4EAW","modified_at":"2026-09-10T03:51:13.389261985Z","published_at":"2026-08-17T18:24:26Z","references":["https://osv.dev/vulnerability/GHSA-8c42-7qj2-3j46","https://github.com/netty/netty/security/advisories/GHSA-8c42-7qj2-3j46","https://github.com/netty/netty/pull/17213","https://github.com/netty/netty/pull/17217","https://github.com/netty/netty","https://github.com/netty/netty/releases/tag/netty-4.1.137.Final","https://github.com/netty/netty/releases/tag/netty-4.2.17.Final"],"severity":{"label":"medium","score":6.5},"sources":[{"source":"osv","source_id":"GHSA-8c42-7qj2-3j46","url":"https://osv.dev/vulnerability/GHSA-8c42-7qj2-3j46"}],"summary":"Netty Vulnerable to Cache Poisoning and Information Disclosure via CORS Vary Header Overwrite"}