CVE-2025-24012
Umbraco Backoffice Components Have XSS/HTML Injection Vulnerability
Umbraco is a free and open source .NET content management system. Starting in version 14.0.0 and prior to versions 14.3.2 and 15.1.2, authenticated users are able to exploit a cross-site scripting vulnerability when viewing certain localized backoffice components. Versions 14.3.2 and 15.1.2 contain a patch.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- Required
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Umbraco Backoffice Components Have XSS/HTML Injection Vulnerability
Umbraco is a free and open source .NET content management system. Starting in version 14.0.0 and prior to versions 14.3.2 and 15.1.2, authenticated users are able to exploit a cross-site scripting vulnerability when viewing certain localized backoffice components. Versions 14.3.2 and 15.1.2 contain a patch.
- Record
CVE-2025-24012- CVSS 3.1
- 4.6 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
EUVDEUVD-2025-0204
Umbraco is a free and open source .NET content management system. Starting in version 14.0.0 and prior to versions 14.3.2 and 15.1.2, authenticated users are able to exploit a cross-site scripting vulnerability when viewing certain localized backoffice components. Versions 14.3.2 and 15.1.2 contain a patch.
- Record
EUVD-2025-0204- CVSS 3.1
- 4.6 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-wv8v-rmw2-25wc
XSS/HTML Injection Vulnerability in Umbraco Backoffice Components
Impact
Authenticated users are able to exploit an XSS vulnerability when viewing certain localized backoffice components.
Patches
Will be patched in 14.3.2 and 15.1.2.
Note: This issue was reported by Pratik Patil from NetSPI @Nexusss-ppatil
- Record
GHSA-wv8v-rmw2-25wc- CVSS 3.1
- 4.6 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
NVD
Umbraco is a free and open source .NET content management system. Starting in version 14.0.0 and prior to versions 14.3.2 and 15.1.2, authenticated users are able to exploit a cross-site scripting vulnerability when viewing certain localized backoffice components. Versions 14.3.2 and 15.1.2 contain a patch.
- Record
CVE-2025-24012- CVSS 3.1
- 4.6 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N - CVSS 3.1
- 5.4 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
OSV
Umbraco Backoffice Components Have XSS/HTML Injection Vulnerability
Umbraco is a free and open source .NET content management system. Starting in version 14.0.0 and prior to versions 14.3.2 and 15.1.2, authenticated users are able to exploit a cross-site scripting vulnerability when viewing certain localized backoffice components. Versions 14.3.2 and 15.1.2 contain a patch.
- Record
CVE-2025-24012- CVSS 3.1
- 4.6 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
OSVGHSA-wv8v-rmw2-25wc
XSS/HTML Injection Vulnerability in Umbraco Backoffice Components
Impact
Authenticated users are able to exploit an XSS vulnerability when viewing certain localized backoffice components.
Patches
Will be patched in 14.3.2 and 15.1.2.
Note: This issue was reported by Pratik Patil from NetSPI @Nexusss-ppatil
- Record
GHSA-wv8v-rmw2-25wc- CVSS 3.1
- 4.6 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
Affected products
Affected packages
| Package | Affected | Fixed |
|---|---|---|
Umbraco.Cms.StaticAssetsNuGet |
14.0.0 up to 14.3.2 | 14.3.2 |
Umbraco.Cms.StaticAssetsNuGet |
15.0.0 up to 15.1.2 | 15.1.2 |
@umbraco-cms/backofficenpm |
14.0.0 up to 14.3.2 | 14.3.2 |
@umbraco-cms/backofficenpm |
15.0.0 up to 15.1.2 | 15.1.2 |
Umbraco.Cms.StaticAssetsNuGet |
14.0.0 up to 14.3.2, plus listed versions 14.1.014.1.0-rc14.1.0-rc214.1.114.1.2 Show 7 moreShow less14.2.014.2.0-rc14.2.0-rc214.2.0-rc314.3.014.3.0-rc14.3.1 |
14.3.2 |
Umbraco.Cms.StaticAssetsNuGet |
15.0.0 up to 15.1.2, plus listed versions 15.1.015.1.0-rc15.1.0-rc215.1.1 |
15.1.2 |
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD, OSV |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-24012 is a medium vulnerability (CVSS 4.6) in Umbraco Umbraco-cms, published January 21, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.27%, the 19th percentile. Fixed in Umbraco.Cms.StaticAssets 14.3.2.
References
github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-wv8v-rmw2-25wc
nvd.nist.gov/vuln/detail/CVE-2025-24012