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Vulnerabilities CVE-2026-46715

CVE-2026-46715

Medium
Open
TLP:CLEAR

Flask-Security-Too OAuth reauthentication freshness bypass via cross- user OAuth identity acceptance

AI Analysis

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Description

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.

Details

CVSS Score
5.3
EPSS Score
0.28%

20.2th percentile

CVSS Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
Confidence
90%
Published
Jul 20, 2026
Last Modified
Jul 20, 2026
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