CVE-2026-79313

Published Sep 22, 2026 CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Title Unexpired Session Replay in web.py 0.76 Allows Unauthorized Access
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Webpy
Webpy webpy
Vendors & Products Webpy
Webpy webpy
Type Values Removed Values Added
Title Unexpired Session Replay in web.py 0.76 Allows Unauthorized Access
Weaknesses CWE-613
Type Values Removed Values Added
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.
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
mitre
Published
Updated
Sep 22, 2026, 7:17 PM
Reserved
Aug 25, 2026, 12:00 AM
Status
Deferred
Published
Sep 22, 2026, 3:17 PM
Modified
Sep 22, 2026, 8:17 PM