Summary
Umbraco has a Management API Vulnerability to Path Traversal With Authenticated Users
Workarounds
Umbraco supports the configuration of allowed and disallowed file extensions. Using these options to allow only necessary file extensions significantly reduces the scope of the vulnerability.
Impact
Authenticated users to the Umbraco backoffice are able to craft management API request that exploit a path traversal vulnerability to upload files into a incorrect location.
Input manipulates file paths to reach files outside the intended directory, such as configuration or credential files. Typical impact: unauthorized file read or write outside the intended directory.
CVE-2025-32017 has a CVSS score of 8.8 (High). The vector is network-reachable, low 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 (14.3.4, 15.3.1); upgrading removes the vulnerable code path.
Affected versions
Security releases
Kodem intelligence
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. Kodem's runtime-powered SCA identifies whether this CVE is reachable in your applications.
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The issue affects Umbraco 14+ and is patched in 14.3.4 and 15.3.1.
Frequently Asked Questions
- What is CVE-2025-32017? CVE-2025-32017 is a high-severity path traversal vulnerability in Umbraco.Cms (nuget), affecting versions >= 14.0.0--preview004, < 14.3.4. It is fixed in 14.3.4, 15.3.1. Input manipulates file paths to reach files outside the intended directory, such as configuration or credential files.
- How severe is CVE-2025-32017? CVE-2025-32017 has a CVSS score of 8.8 (High). 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.
- Which versions of Umbraco.Cms are affected by CVE-2025-32017? Umbraco.Cms (nuget) versions >= 14.0.0--preview004, < 14.3.4 is affected.
- Is there a fix for CVE-2025-32017? Yes. CVE-2025-32017 is fixed in 14.3.4, 15.3.1. Upgrade to this version or later.
- Is CVE-2025-32017 exploitable, and should I be worried? Whether CVE-2025-32017 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
- What actually determines whether CVE-2025-32017 is exploitable, and how bad it is? 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.
- How do I fix CVE-2025-32017?
- Upgrade
Umbraco.Cmsto 14.3.4 or later - Upgrade
Umbraco.Cmsto 15.3.1 or later
- Upgrade