CVE-2024-48926 Umbraco CMS logout page displayed before session expiration
Attackers can exploit a timing gap where the logout page appears before session expiration, potentially allowing unauthorized access during the delay.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2024-48926?
CVE-2024-48926 is a medium-severity vulnerability in Umbraco Umbraco Cms, published on 22 Oct 2024. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-613
Which versions are affected by CVE-2024-48926?
6 open source packages ship an affected version, including Umbraco.CMS and UmbracoCMS. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
Umbraco.CMS NuGet | From 10.0.0 | 10.8.7 |
Umbraco.CMS NuGet | From 10.0.0 | 10.8.7 |
Umbraco.CMS NuGet | From 13.0.0 | 13.5.2 |
Umbraco.CMS NuGet | From 13.0.0 | 13.5.2 |
UmbracoCMS NuGet | From 8.0.0 | 8.18.15 |
UmbracoCMS NuGet | From 8.0.0 | 8.18.15 |
Products include Umbraco Umbraco Cms.
How do I fix CVE-2024-48926?
Upgrade Umbraco.CMS to a fixed version for your release line: 10.8.7 or 13.5.2.
Is CVE-2024-48926 being exploited?
There is no known exploitation of CVE-2024-48926 in the wild and no public exploit code.
Other vulnerabilities in Umbraco Umbraco Cms
- CVE-2025-67288 Umbraco CMS has an arbitrary file upload vulnerability
- CVE-2014-10074 File upload in n/a
- CVE-2012-1301 Server-side request forgery in n/a
- CVE-2012-10054 Umbraco CMS < 4.7.1 codeEditorSave.asmx RCE
- CVE-2025-32017 Umbraco has a Management API Vulnerability to Path Traversal With Authenticated Users
Sources
Also known as GHSA-fp6q-gccw-7qqm.