CVE-2026-28802 in Authlib

Sumário

de MITRE • 06/03/2026

Authlib is a Python library which builds OAuth and OpenID Connect servers. From version 1.6.5 to before version 1.6.7, previous tests involving passing a malicious JWT containing alg: none and an empty signature was passing the signature verification step without any changes to the application code when a failure was expected.. This issue has been patched in version 1.6.7.

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• Responsável: GitHub M
• Reservar: 03/03/2026
• Divulgação: 06/03/2026
• Moderação: aceite
• Entrada: VDB-349411
• CPE: pronto
• CWE: CWE-347 (confirmado)
• CVSS: 9.8 (NVD)
• EPSS: 0.00425
• KEV: não
• Atividades: muito baixo

Fontes

• MITRE: https://www.cve.org/CVERecord?id=CVE-2026-28802
• NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-28802
• CVE Details: https://www.cvedetails.com/cve/CVE-2026-28802/