CVE-2025-49147 is a medium-severity security vulnerability in Umbraco.Cms (nuget), affecting versions >= 10.0.0, < 10.8.11. It is fixed in 10.8.11, 13.9.2.
Impact 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. The vulnerability can be found in the supported Umbraco versions 10 and 13. It was not exposed in Umbraco 7 or 8, nor in 14 or higher versions. Patches Patched in 10.8.11 and 13.9.2
CVE-2025-49147 has a CVSS score of 5.3 (Medium). The vector is network-reachable, no privileges required, and no user interaction. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment.
A fixed version is available (10.8.11, 13.9.2). Upgrading removes the vulnerable code path.
nuget
Umbraco.Cms (>= 10.0.0, < 10.8.11)Umbraco.Cms (>= 13.0.0, < 13.9.2)Umbraco.Cms → 10.8.11 (nuget)Umbraco.Cms → 13.9.2 (nuget)Severity tells you how bad this could be in the worst case. It does not tell you whether you are exposed. Exploitability and impact are functions of runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A vulnerable package can sit in your dependency tree and never run.
Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter instead of chasing every advisory.
Kodem's runtime-powered SCA identifies whether CVE-2025-49147 is reachable in your applications. Explore open-source security for your team.
See if CVE-2025-49147 is reachable in your applications. Get a demo
Upgrade the following packages to resolve this vulnerability:
Umbraco.Cms to 10.8.11 or laterUmbraco.Cms to 13.9.2 or laterKodem Kai can prioritize this vulnerability in your dependency tree and generate a fix recommendation.
CVE-2025-49147 is a medium-severity security vulnerability in Umbraco.Cms (nuget), affecting versions >= 10.0.0, < 10.8.11. It is fixed in 10.8.11, 13.9.2.
CVE-2025-49147 has a CVSS score of 5.3 (Medium). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
Umbraco.Cms (nuget) versions >= 10.0.0, < 10.8.11 is affected.
Yes. CVE-2025-49147 is fixed in 10.8.11, 13.9.2. Upgrade to this version or later.
Whether CVE-2025-49147 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
Umbraco.Cms to 10.8.11 or laterUmbraco.Cms to 13.9.2 or later