Information Disclosure in Umbraco CMS Affects User Password Security
CVE-2025-49147

5.3MEDIUM

Key Information:

Vendor

Umbraco

Status
Umbraco-cms
Vendor
CVE Published:
24 June 2025

What is CVE-2025-49147?

Umbraco, a free and open-source .NET content management system, is affected by an information disclosure vulnerability that impacts versions 10.0.0 through 10.8.10 and 13.0.0 through 13.9.1. An attacker can exploit this vulnerability by sending a request to an anonymously authenticated endpoint, which may reveal some details about the password requirements configured in the system. Although the exposed information is limited, it can provide attackers with clues that could assist in brute-force attacks on user passwords. This vulnerability does not exist in Umbraco versions 7 or 8, nor in those higher than 14. The issue has been addressed in versions 10.8.11 and 13.9.2.

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Affected Version(s)

Umbraco-CMS >= 10.0.0, < 10.8.111 < 10.0.0, 10.8.111

Umbraco-CMS >= 13.0.0, < 13.9.2 < 13.0.0, 13.9.2

References

https://github.com/umbraco/Umbraco-CMS/security/advisorie...
x_refsource_CONFIRM
https://github.com/umbraco/Umbraco-CMS/commit/b4144564c83...
x_refsource_MISC
https://github.com/umbraco/Umbraco-CMS/commit/d8f68d2c40f...
x_refsource_MISC

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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