Umbraco CMS possible path traversal when creating packages from backoffice
Priority LOW 35CWE-22Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · High · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and GitHub.
Summary
Umbraco is an ASP.NET content management system (CMS). Starting in version 8.0.0 and prior to versions 8.18.10, 10.8.1, and 12.3.0, Backoffice users with permissions to create packages can use path traversal and thereby write outside of the expected location. Versions 8.18.10, 10.8.1, and 12.3.0 contain a patch for this issue.
Why it matters now
EPSS 0.00624 50th percentileScored 2026-11-07
Fix Fixed Umbraco-CMS (umbraco): 8.18.10, 10.8.1, 12.3.4Umbraco.CMS (NuGet): 8.18.10, 10.8.1, 12.3.4
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| umbraco | Umbraco-CMS | 8.0.0 to before 8.18.10; 9.0.0-rc001 to before 10.8.1; 11.0.0-rc1 to before 12.3.4 | 8.18.10, 10.8.1, 12.3.4 | Patch available | CNA |
| — | Umbraco.CMS (NuGet) | 8.0.0 to before 8.18.10 | 8.18.10 | Patch available | GHSA-6324-52pr-h4p5 |
| — | Umbraco.CMS (NuGet) | 9.0.0 to before 10.8.1 | 10.8.1 | Patch available | GHSA-6324-52pr-h4p5 |
| — | Umbraco.CMS (NuGet) | 11.0.0 to before 12.3.4 | 12.3.4 | Patch available | GHSA-6324-52pr-h4p5 |
- Umbraco-CMS Vendorumbraco Affected 8.0.0 to before 8.18.10; 9.0.0-rc001 to before 10.8.1; 11.0.0-rc1 to before 12.3.4 Fixed in 8.18.10, 10.8.1, 12.3.4 Patch available CNA
- Umbraco.CMS (NuGet) Vendor— Affected 8.0.0 to before 8.18.10 Fixed in 8.18.10 Patch available GHSA-6324-52pr-h4p5
- Umbraco.CMS (NuGet) Vendor— Affected 9.0.0 to before 10.8.1 Fixed in 10.8.1 Patch available GHSA-6324-52pr-h4p5
- Umbraco.CMS (NuGet) Vendor— Affected 11.0.0 to before 12.3.4 Fixed in 12.3.4 Patch available GHSA-6324-52pr-h4p5
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:umbraco:umbraco_cms:*:*:*:*:*:*:*:* | 8.0.0 to before 8.18.10; 10.0.0 to before 10.8.1; 12.0.0 to before 12.3.0 | Vulnerable | umbraco |
- cpe:2.3:a:umbraco:umbraco_cms:*:*:*:*:*:*:*:* Versions 8.0.0 to before 8.18.10; 10.0.0 to before 10.8.1; 12.0.0 to before 12.3.0 Vulnerable ·umbraco
Remediation
- Fix · CNA Umbraco-CMS (umbraco) Fixed in 8.18.10, 10.8.1, 12.3.4
- Fix · GHSA-6324-52pr-h4p5 Umbraco.CMS (NuGet) Fixed in 8.18.10 Advisory →
- Fix · GHSA-6324-52pr-h4p5 Umbraco.CMS (NuGet) Fixed in 10.8.1 Advisory →
- Fix · GHSA-6324-52pr-h4p5 Umbraco.CMS (NuGet) Fixed in 12.3.4 Advisory →
Timeline
- 2026-10-02 Threatist record created from CVE-2023-49089
- 2026-10-03 Alias added: GHSA-6324-52pr-h4p5
- 2026-11-04 EPSS moved to the 50th–90th percentile
References
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-2023-49089 · CVE Program
- CVE-2023-49089 · NVD
- FIRST EPSS
- GHSA-6324-52pr-h4p5 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences