CVEvulnerability
CVE-2021-21241
7.4 HIGH
Official page ↗
- Status
- Modified
- Published
- 2021-01-11
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.4 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
- CVSS 3.1 ([email protected])
- 7.4 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
- CVSS 2.0 ([email protected])
- 4.3 MEDIUM — AV:N/AC:M/Au:N/C:P/I:N/A:N
- Weaknesses
- CWE-352
Description
The Python "Flask-Security-Too" package is used for adding security features to your Flask application. It is an is a independently maintained version of Flask-Security based on the 3.0.0 version of Flask-Security. In Flask-Security-Too from version 3.3.0 and before version 3.4.5, the /login and /change endpoints can return the authenticated user's authentication token in response to a GET request. Since GET requests aren't protected with a CSRF token, this could lead to a malicious 3rd party site acquiring the authentication token. Version 3.4.5 and version 4.0.0 are patched. As a workaround, if you aren't using authentication tokens - you can set the SECURITY_TOKEN_MAX_AGE to "0" (seconds) which should make the token unusable.
Affected configurations
• flask-security-too project flask-security-too (>= 3.3.0 < 3.4.5)
Related
Weakness · CWE (1)
- CWE-352 Cross-Site Request Forgery weakness
References
- https://github.com/Flask-Middleware/flask-security/commit/61d313150b5f620d0b800896c4f2199005e84b1f Patch, Third Party Advisory
- https://github.com/Flask-Middleware/flask-security/commit/6d50ee9169acf813257c37b75babe9c28e83542a Patch, Third Party Advisory
- https://github.com/Flask-Middleware/flask-security/pull/422 Patch, Third Party Advisory
- https://github.com/Flask-Middleware/flask-security/releases/tag/3.4.5 Third Party Advisory
- https://github.com/Flask-Middleware/flask-security/security/advisories/GHSA-hh7m-rx4f-4vpv Third Party Advisory
- https://pypi.org/project/Flask-Security-Too Product, Third Party Advisory
- https://github.com/Flask-Middleware/flask-security/commit/61d313150b5f620d0b800896c4f2199005e84b1f Patch, Third Party Advisory
- https://github.com/Flask-Middleware/flask-security/commit/6d50ee9169acf813257c37b75babe9c28e83542a Patch, Third Party Advisory
- https://github.com/Flask-Middleware/flask-security/pull/422 Patch, Third Party Advisory
- https://github.com/Flask-Middleware/flask-security/releases/tag/3.4.5 Third Party Advisory
- https://github.com/Flask-Middleware/flask-security/security/advisories/GHSA-hh7m-rx4f-4vpv Third Party Advisory
- https://pypi.org/project/Flask-Security-Too Product, Third Party Advisory