{"action":"Upgrade pyjwt to 2.14.0 or later.","affected":[{"fixed":"2.14.0","introduced":"2.13.0"}],"component":"pyjwt","cve_ids":["CVE-2026-102266"],"ecosystem":"PyPI","epss":0.00225,"exploited":false,"fixed_versions":["2.14.0"],"ghsa_id":"GHSA-9j54-fg26-wv3r","id":"tcs_01M5KHA61Z82SP83N1KQANAGMA","modified_at":"2026-10-01T17:45:15.998111810Z","published_at":"2026-10-01T16:38:40.789707Z","references":["https://osv.dev/vulnerability/PYSEC-2026-4143","https://github.com/jpadilla/pyjwt/security/advisories/GHSA-9j54-fg26-wv3r","https://nvd.nist.gov/vuln/detail/CVE-2026-102266","https://github.com/jpadilla/pyjwt/commit/f91ed44dd65baaf457f4b3353ed35e98a753934c","https://github.com/jpadilla/pyjwt","https://github.com/jpadilla/pyjwt/releases/tag/2.14.0","https://pypi.org/project/pyjwt","https://github.com/advisories/GHSA-9j54-fg26-wv3r"],"severity":{"label":"high","score":7.4},"sources":[{"source":"osv","source_id":"PYSEC-2026-4143","url":"https://osv.dev/vulnerability/PYSEC-2026-4143"}],"summary":"PyJWT: PyJWK accepts empty HMAC keys, bypassing PyJWT's empty-key validation"}