PyPI/flask-security-too CVE-2021-21241: high 7.4, EPSS 0.93%

CSRF can expose users authentication token

Action: Upgrade flask-security-too to 3.4.5 or later.

pip install flask-security-too==3.4.5

Affected

Fixed versions

Sources

• osv: GHSA-hh7m-rx4f-4vpv
• https://nvd.nist.gov/vuln/detail/CVE-2021-21241
• https://github.com/pypa/advisory-database/tree/main/vulns/flask-security-too/PYSEC-2021-91.yaml
• https://pypi.org/project/Flask-Security-Too
• https://web.archive.org/web/20210118165844/https://github.com/Flask-Middleware/flask-security/releases/tag/3.4.5
• https://web.archive.org/web/20210118165958/https://github.com/Flask-Middleware/flask-security/commit/6d50ee9169acf813257c37b75babe9c28e83542a
• https://web.archive.org/web/20210118170445/https://github.com/Flask-Middleware/flask-security/commit/61d313150b5f620d0b800896c4f2199005e84b1f
• https://web.archive.org/web/20210118170502/https://github.com/Flask-Middleware/flask-security/security/advisories/GHSA-hh7m-rx4f-4vpv
• https://web.archive.org/web/20211207005640/https://github.com/Flask-Middleware/flask-security/pull/422

CVE-2021-21241 · published 2021-01-11T20:38:28Z · modified 2026-03-13T22:16:07.774320Z · JSON