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 soon to be released 4.0.0 are patched.
If you aren’t using authentication tokens - you can set the SECURITY_TOKEN_MAX_AGE to “0” (seconds) which should make the token unusable.
None
github.com/Flask-Middleware/flask-security/commit/61d313150b5f620d0b800896c4f2199005e84b1f
github.com/Flask-Middleware/flask-security/commit/6d50ee9169acf813257c37b75babe9c28e83542a
github.com/Flask-Middleware/flask-security/pull/422
github.com/Flask-Middleware/flask-security/releases/tag/3.4.5
github.com/Flask-Middleware/flask-security/security/advisories/GHSA-hh7m-rx4f-4vpv
nvd.nist.gov/vuln/detail/CVE-2021-21241
pypi.org/project/Flask-Security-Too