What’s Vulnerable › Vulnerabilities
CVE-2024-48926: Umbraco CMS logout page displayed before session expiration
- Severity: low (CVSS 3.1 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.3% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2024-10-22 · updated 2026-06-17
- Weakness: CWE-613
Description
Umbraco, a free and open source .NET content management system, has an insufficient session expiration issue in versions on the 13.x branch prior to 13.5.2, 10.x prior to 10.8.7, and 8.x prior to 8.18.15. The Backoffice displays the logout page with a session timeout message before the server session has fully expired, causing users to believe they have been logged out approximately 30 seconds before they actually are. Versions 13.5.2, 10.8,7, and 8.18.15 contain a patch for the issue.
Affected products
- Umbraco-CMS: from 8.0 before 8.18.15; from 10.0 before 10.8.7; from 13.0 before 13.5.2 — fixed in 10.8.7, 13.5.2, 8.18.15
How to fix
Upgrade to a fixed version: Umbraco-CMS 10.8.7, 13.5.2, 8.18.15. Check the vendor advisory for mitigations.
References
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