Umbraco has a Management API Vulnerability to Path Traversal With Authenticated Users
Priority LOW 39CWE-23Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.
Summary
Umbraco is a free and open source .NET content management system. 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. The issue affects Umbraco 14+ and is patched in 14.3.4 and 15.3.1.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00646 51st percentileScored 2026-11-07
Fix Fixed Umbraco-CMS (umbraco): 14.3.4, 15.3.1Umbraco.Cms (NuGet): 14.3.4, 15.3.1
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| umbraco | Umbraco-CMS | 14.0.0--preview004 to before 14.3.4; 15.0.0-rc1 to before 15.3.1 | 14.3.4, 15.3.1 | Patch available | CNA |
| — | Umbraco.Cms (NuGet) | 14.0.0--preview004 to before 14.3.4 | 14.3.4 | Patch available | GHSA-q62r-8ppj-xvf4 |
| — | Umbraco.Cms (NuGet) | 15.0.0-rc1 to before 15.3.1 | 15.3.1 | Patch available | GHSA-q62r-8ppj-xvf4 |
- Umbraco-CMS Vendorumbraco Affected 14.0.0--preview004 to before 14.3.4; 15.0.0-rc1 to before 15.3.1 Fixed in 14.3.4, 15.3.1 Patch available CNA
- Umbraco.Cms (NuGet) Vendor— Affected 14.0.0--preview004 to before 14.3.4 Fixed in 14.3.4 Patch available GHSA-q62r-8ppj-xvf4
- Umbraco.Cms (NuGet) Vendor— Affected 15.0.0-rc1 to before 15.3.1 Fixed in 15.3.1 Patch available GHSA-q62r-8ppj-xvf4
Remediation
- Fix · CNA Umbraco-CMS (umbraco) Fixed in 14.3.4, 15.3.1
- Fix · GHSA-q62r-8ppj-xvf4 Umbraco.Cms (NuGet) Fixed in 14.3.4 Advisory →
- Fix · GHSA-q62r-8ppj-xvf4 Umbraco.Cms (NuGet) Fixed in 15.3.1 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2025-32017
- 2026-10-03 Alias added: GHSA-q62r-8ppj-xvf4
- 2026-10-25 EPSS moved to the 50th–90th percentile
References
Patch 3
More Umbraco Cms vulnerabilities
- TI-2025-41183 An arbitrary file upload vulnerability in Umbraco CMS v16.3.3 allows attackers to execute… CVSS 3.1CRITICAL 10.0
- TI-2012-05477 Umbraco CMS < 4.7.1 codeEditorSave.asmx RCE CVSS 4.0CRITICAL 9.3
- TI-2021-22392 Umbraco v8.14.1 - 'baseUrl' SSRF CVSS 4.0MEDIUM 6.9
- TI-2024-36846 A stored cross-site scripting (XSS) vulnerability in Umbraco CMS v14.3.1 allows attackers… CVSS 3.1MEDIUM 6.5
- TI-2019-15240 Umbraco CMS 4.11.8 through 7.15.10, and 7.12.4, allows Remote Code Execution by… CVSS 3.1HIGH 7.2
- TI-2020-04738 Cross-site scripting in Umbraco CMS CVSS 3.1MEDIUM 5.4
Sources
- CVE-2025-32017 · CVE Program
- CVE-2025-32017 · NVD
- FIRST EPSS
- GHSA-q62r-8ppj-xvf4 · GitHub Advisory Database · CC BY 4.0
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