CVE-2026-46715 — Flask-Security-Too OAuth reauthentication freshness bypass via cross- user OAuth identity acceptance
Flask-Security-Too allows users to add security features to their Flask applicationa. Version 5.8.0's OAuth reauthentication flow can mark a session as fresh after verifying an …
Published: 2026-07-20 · CVSS: 5.3 · CVSS 4.0
Flask-Security-Too allows users to add security features to their Flask applicationa. Version 5.8.0's OAuth reauthentication flow can mark a session as fresh after verifying an OAuth account that belongs to a different user. If an attacker can operate an already-authenticated but stale victim session, they can complete OAuth verification using their own OAuth identity. The victim session is then treated as recently reauthenticated, allowing freshness-protected account actions to proceed. Version 5.8.1 contains a fix for this issue.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7