CVE-2026-79313
webpy web.py 0.76 is vulnerable to Insufficient Session Expiration. The application's session management relies on periodic cleanup to expire sessions instead of checking the last-access time when a session is loaded. As a result, an expired session whose record has not yet been cleaned up can still be replayed and used, allowing an attacker holding a previously valid session cookie to continue accessing protected resources after the configured idle timeout.
- Published Sep 22, 2026
- CVSS 9.8 critical
- 0.4% chance of exploitation in the next 30 days (EPSS)