CVE-2024-48929 Umbraco CMS Has Incomplete Server Termination During Explicit Sign-Out
Attackers can maintain access after sign-out because the server session is not fully terminated, allowing potential account takeover.
- 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-2024-48929?
CVE-2024-48929 is a medium-severity authentication bypass 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 is a free and open source .NET content management system. In versions on the 13.x branch prior to 13.5.2 and versions on the 10.x branch prior to 10.8.7, during an explicit sign-out, the server session is not fully terminated. Versions 13.5.2 and 10.8.7 contain a patch for the issue.
Weakness: CWE-384
Which versions are affected by CVE-2024-48929?
4 open source packages ship an affected version, including Umbraco.CMS. 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 |
Products include Umbraco Umbraco Cms.
How do I fix CVE-2024-48929?
Upgrade Umbraco.CMS to a fixed version for your release line: 10.8.7 or 13.5.2.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2024-48929 being exploited?
There is no known exploitation of CVE-2024-48929 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-wxw9-6pv9-c3xc.