CVE-2026-46715 | Flask-Security-Too allows users to add security features to … | CVSS 5.3 MEDIUM

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.

Metadata

CVE ID: CVE-2026-46715
State: PUBLISHED
Assigner: GitHub_M
Reserved: 2026-05-15 23:26 UTC
Published: 2026-07-20 17:10 UTC
Last updated: 2026-07-20 18:43 UTC
Primary CWE: CWE-287
CWE-287: Improper Authentication
Vendor / Product: pallets-eco / Flask-Security-Too
Sources: cve.org · NVD

Severity & Metrics

5.3 MEDIUM CVSS 4.0

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

SSVC — CISA Coordinator

Exploitation: PoC
Automatable: no
Tech. Impact: partial

Affected products (1)

Vendor	Product	Platform	Versions
pallets-eco	Flask-Security-Too	—	>= 5.8.0, < 5.8.1

Weakness (CWE)

CWE	Source	Description
CWE-287	cna	CWE-287: Improper Authentication

CVSS scores (1)

Score	Severity	Version	Source	Vector
5.3	MEDIUM	4.0	cna	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

References (2)

https://github.com/pallets-eco/flask-security/security/advisories/GHSA-97r5-pg8x-p63p https://github.com/pallets-eco/flask-security/security/advisories/GHSA-97r5-pg8x-p63p
https://github.com/pallets-eco/flask-security/commit/8e69f3a94a463c0e8ddc46e31743717559fd8d48 https://github.com/pallets-eco/flask-security/commit/8e69f3a94a463c0e8ddc46e31743717559fd8d48