{"action":"Upgrade fast-jwt to 6.3.1 or later.","affected":[{"fixed":"6.3.1","introduced":"0"}],"component":"fast-jwt","cve_ids":["CVE-2026-107720"],"ecosystem":"npm","epss":0.00324,"exploited":false,"fixed_versions":["6.3.1"],"ghsa_id":"GHSA-8wpc-h4q6-8fxv","id":"tcs_01M5KFE6XK574KRAYP6G5M4CV1","modified_at":"2026-10-08T22:15:07.105532249Z","published_at":"2026-10-08T22:02:12Z","references":["https://osv.dev/vulnerability/GHSA-8wpc-h4q6-8fxv","https://github.com/nearform/fast-jwt/security/advisories/GHSA-8wpc-h4q6-8fxv","https://github.com/nearform/fast-jwt/pull/649","https://github.com/nearform/fast-jwt/commit/e22a151e83bf6d5e54e281216982d204d5665534","https://github.com/nearform/fast-jwt","https://github.com/nearform/fast-jwt/releases/tag/v6.3.1"],"severity":{"label":"high","score":7.4},"sources":[{"source":"osv","source_id":"GHSA-8wpc-h4q6-8fxv","url":"https://osv.dev/vulnerability/GHSA-8wpc-h4q6-8fxv"}],"summary":"fast-jwt: createVerifier accepts unsigned JWTs when key is '' or null and algorithms is explicitly set"}