{"action":"Upgrade fast-jwt to 6.2.1 or later.","affected":[{"fixed":"6.2.1","introduced":"5.0.0"}],"component":"fast-jwt","cve_ids":["CVE-2026-35041"],"ecosystem":"npm","epss":0.00262,"exploited":false,"fixed_versions":["6.2.1"],"ghsa_id":"GHSA-cjw9-ghj4-fwxf","id":"tcs_01M5KFK1ZAVFKKF6TB936VCN2K","modified_at":"2026-04-09T19:19:01.951859Z","published_at":"2026-04-09T16:41:40Z","references":["https://osv.dev/vulnerability/GHSA-cjw9-ghj4-fwxf","https://github.com/nearform/fast-jwt/security/advisories/GHSA-cjw9-ghj4-fwxf","https://nvd.nist.gov/vuln/detail/CVE-2026-35041","https://github.com/nearform/fast-jwt/pull/595","https://github.com/nearform/fast-jwt/commit/b0be0ca161593836a153d5180ca5358ad9b5de94","https://github.com/nearform/fast-jwt","https://github.com/nearform/fast-jwt/releases/tag/v6.2.1"],"severity":{"label":"medium","score":4.2},"sources":[{"source":"osv","source_id":"GHSA-cjw9-ghj4-fwxf","url":"https://osv.dev/vulnerability/GHSA-cjw9-ghj4-fwxf"}],"summary":"fast-jwt has a ReDoS when using RegExp in allowed* leading to CPU exhaustion during token verification"}