Incorrect Authorization Affecting flask-security-too package, versions [5.8.0,5.9.0)
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- published8 Jul 2026
- disclosed7 Jul 2026
- creditUnknown
Introduced: 7 Jul 2026
CVE NOT AVAILABLE CWE-287 (opens in a new tab)How to fix?
Upgrade Flask-Security-Too to version 5.9.0 or higher.
Overview
Affected versions of this package are vulnerable to Incorrect Authorization in the webauthn_verify_response process. An attacker can gain unauthorized access to sensitive operations by submitting a valid WebAuthn assertion for their own credential within a victim's authenticated session, thereby bypassing session freshness checks. This is only exploitable if the attacker possesses a registered WebAuthn credential on the same deployment and can drive HTTP requests within the victim's session, such as through CSRF, XSS, or session fixation techniques.