CVE-2025-49147 Umbraco.Cms Vulnerable to Disclosure of Configured Password Requirements

What is CVE-2025-49147?

CVE-2025-49147 is a medium-severity vulnerability in Umbraco Umbraco Cms, published on 24 Jun 2025. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Umbraco, a free and open source .NET content management system, has a vulnerability in versions 10.0.0 through 10.8.10 and 13.0.0 through 13.9.1. Via a request to an anonymously authenticated endpoint it's possible to retrieve information about the configured password requirements. The information available is limited but would perhaps give some additional detail useful for someone attempting to brute force derive a user's password. This information was not exposed in Umbraco 7 or 8, nor in 14 or higher versions. The vulnerability is patched in versions 10.8.11 and 13.9.2.

Weakness: CWE-497

Which versions are affected by CVE-2025-49147?

4 open source packages ship an affected version, including Umbraco.Cms. It affects 1 product.

Products include Umbraco Umbraco Cms.

How do I fix CVE-2025-49147?

Upgrade Umbraco.Cms to a fixed version for your release line: 10.8.11 or 13.9.2.

Is CVE-2025-49147 being exploited?

There is no known exploitation of CVE-2025-49147 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 Critical 10.0
• CVE-2014-10074 File upload in n/a Critical 9.8
• CVE-2012-1301 Server-side request forgery in n/a Critical 9.8
• CVE-2012-10054 Umbraco CMS < 4.7.1 codeEditorSave.asmx RCE Critical 9.3
• CVE-2025-32017 Umbraco has a Management API Vulnerability to Path Traversal With Authenticated Users High 8.8

All Umbraco Umbraco Cms vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-pgvc-6h2p-q4f6.