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CRITICAL

webpy web.py 0.76 is vulnerable to Insufficient Session Expiration

Published Sep 22, 2026

Description

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.

Affected products

Remediation

No remediation recorded yet.

Weaknesses (1)

References (2)

Change history (0)

No recorded changes yet.

Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Sep 22, 2026
Updated Sep 22, 2026
Reserved Aug 25, 2026
CISA Vulnrichment
Updated Sep 22, 2026
NVD
Status Deferred
Modified Sep 22, 2026
Red Hat
Severity n/a
Public date n/a