{"action":"Upgrade joi to 17.13.8 or later.","affected":[{"fixed":"17.13.8","introduced":"0"},{"fixed":"18.2.9","introduced":"18.0.0"}],"component":"joi","cve_ids":["CVE-2026-90771"],"ecosystem":"npm","epss":0.00389,"exploited":false,"fixed_versions":["17.13.8","18.2.9"],"ghsa_id":"GHSA-wr44-6hxh-3jwq","id":"tcs_01M5KGFTSQ764C4C21MVQWYAH5","modified_at":"2026-10-05T23:45:08.228760837Z","published_at":"2026-09-13T12:31:12Z","references":["https://osv.dev/vulnerability/GHSA-wr44-6hxh-3jwq","https://nvd.nist.gov/vuln/detail/CVE-2026-90771","https://github.com/hapijs/joi/issues/3150","https://github.com/hapijs/joi/pull/3151","https://github.com/hapijs/joi/pull/3153","https://github.com/hapijs/joi/commit/1d2001cad9971327a62c9fd8eb1afec20cd784d2","https://github.com/hapijs/joi/commit/5b8333c9177e08b4ef4ed02903c2d657084e7afb","https://github.com/hapijs/joi","https://github.com/hapijs/joi/blob/v18.2.8/lib/messages.js","https://github.com/hapijs/joi/releases/tag/v17.13.8","https://github.com/hapijs/joi/releases/tag/v18.2.9","https://www.vulncheck.com/advisories/joi-before-17.13.8-and-18.2.9-prototype-pollution-via-messages"],"severity":{"label":"low","score":3.7},"sources":[{"source":"osv","source_id":"GHSA-wr44-6hxh-3jwq","url":"https://osv.dev/vulnerability/GHSA-wr44-6hxh-3jwq"}],"summary":"joi messages compilation allows prototype replacement through __proto__ error codes"}