{"id":86999,"date":"2026-04-26T16:10:10","date_gmt":"2026-04-26T16:10:10","guid":{"rendered":""},"modified":"-0001-11-30T00:00:00","modified_gmt":"-0001-11-30T06:00:00","slug":"cve-2025-59420-critical-vulnerability-in-authlib-python-library-s-jws-verification-process","status":"publish","type":"post","link":"https:\/\/www.ameeba.com\/blog\/cve-2025-59420-critical-vulnerability-in-authlib-python-library-s-jws-verification-process\/","title":{"rendered":"CVE-2025-59420: Critical Vulnerability in Authlib Python Library’s JWS Verification Process<\/strong>"},"content":{"rendered":"

Overview<\/strong><\/p>\n

CVE-2025-59420 is a critical vulnerability identified in the Authlib Python library. This vulnerability, which affects versions of Authlib prior to 1.6.4, has potential system compromise or data leakage implications for any servers built using this library. The vulnerability’s importance is underscored by its high CVSS severity score of 7.5 and the risks it poses to OAuth and OpenID Connect servers.<\/p>\n

Vulnerability Summary<\/strong><\/p>\n

CVE ID: CVE-2025-59420
\nSeverity: High – CVSS Score 7.5
\nAttack Vector: Network
\nPrivileges Required: None
\nUser Interaction: None
\nImpact: Potential system compromise or data leakage<\/p>\n

Affected Products<\/strong><\/p>

\r\n

\r\n \r\n \"Ameeba\r\n <\/a>\r\n A new way to communicate\r\n <\/h2>\r\n\r\n

\r\n Ameeba Chat is built on encrypted identity, not personal profiles.\r\n <\/p>\r\n\r\n

\r\n Message, call, share files, and coordinate with identities kept separate.\r\n <\/p>\r\n\r\n