CVE-2026-46715

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.

CVSS v4.0

5.3 MEDIUMCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS

0.49% chance of exploitation in the next 30 days, 40th percentile

Published

2026-07-20

Proof-of-concept exploits (1)

• advisories/GHSA-97r5-pg8x-p63p

References

• CVE Record
• NVD entry

Related

• CVE-2026-46705
• CVE-2026-46716
• CVE-2026-46703
• CVE-2026-46717
• CVE-2026-46702
• CVE-2026-4672