{"action":"Upgrade fastify to 5.12.2 or later.","affected":[{"fixed":"5.12.2","introduced":"0"}],"component":"fastify","cve_ids":["CVE-2026-84469"],"ecosystem":"npm","epss":0.00492,"exploited":false,"fixed_versions":["5.12.2"],"ghsa_id":"GHSA-hwr6-493r-vm6h","id":"tcs_01M5KFWB27V66BBBMXSFHCRGX3","modified_at":"2026-10-01T00:00:04.687101683Z","published_at":"2026-09-30T23:44:58Z","references":["https://osv.dev/vulnerability/GHSA-hwr6-493r-vm6h","https://github.com/fastify/fastify/security/advisories/GHSA-hwr6-493r-vm6h","https://nvd.nist.gov/vuln/detail/CVE-2026-84469","https://github.com/fastify/fastify/commit/7de6e81697778f9f41bd327a3b1c5c9a0d9637b4","https://cna.openjsf.org/security-advisories.html","https://github.com/fastify/fastify","https://github.com/fastify/fastify/releases/tag/v5.12.2"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"GHSA-hwr6-493r-vm6h","url":"https://osv.dev/vulnerability/GHSA-hwr6-493r-vm6h"}],"summary":"fastify vulnerable to request validation bypass via skipped boolean false schemas"}