Umbraco Backoffice Components Have XSS/HTML Injection Vulnerability
Published Jan 21, 2025
5.4
MEDIUMCVSS 3.1
EPSS 0.27%
Description
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.
Affected products
-
- Version >= 14.0.0, < 14.3.2StatusaffectedConstraints-
- Version >= 15.0.0, < 15.1.2StatusaffectedConstraints-
- Version
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Umbraco | Umbraco-CMS | n/a |
|
- ≥ 14.0.0 · < 14.3.2
- ≥ 15.0.0 · < 15.1.2
No data.
No Red Hat product state for this CVE.
Umbraco.Cms.StaticAssets
NuGet
Introduced 14.0.0 Fixed 14.3.2Umbraco.Cms.StaticAssets
NuGet
Introduced 15.0.0 Fixed 15.1.2@umbraco-cms/backoffice
npm
Introduced 14.0.0 Fixed 14.3.2@umbraco-cms/backoffice
npm
Introduced 15.0.0 Fixed 15.1.2
| Ecosystem | Package | Introduced | Fixed |
|---|---|---|---|
| NuGet | Umbraco.Cms.StaticAssets | 14.0.0 | 14.3.2 |
| NuGet | Umbraco.Cms.StaticAssets | 15.0.0 | 15.1.2 |
| npm | @umbraco-cms/backoffice | 14.0.0 | 14.3.2 |
| npm | @umbraco-cms/backoffice | 15.0.0 | 15.1.2 |
Remediation
No remediation recorded yet.
Metrics
No CVSS v4.0 score for this CVE.
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
1 other source (GHSA) ▾
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
No CVSS v3.0 score for this CVE.
No CVSS v2.0 score for this CVE.
This CVE is not in the KEV list.
CISA SSVC (Vulnrichment)
Stakeholder-Specific Vulnerability Categorization from CISA ADP.
Exploitation
NoneAutomatable
NoTechnical Impact
PartialDecision
n/aAssessed Jan 21, 2025 · SSVC 2.0.3
Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 1, 2026.
Score over time
2025–2026- EPSS v3
- EPSS v4
- EPSS v5
Percentile over time
- EPSS v3
- EPSS v4
- EPSS v5
Table of values (5 key points)
Flat stretches are collapsed; showing up to 120 newest points.
| Date | Score | Percentile | Model |
|---|---|---|---|
| Oct 1, 2026 | 0.27% (0.00267) | 17.07th | v5 (v2026.06.15) |
| Jun 15, 2026 | 0.25% (0.00247) | 15.69th | v5 (v2026.06.15) |
| Jun 12, 2026 | 1.21% (0.01212) | 79.46th | v4 (v2025.03.14) |
| Mar 17, 2025 | 0.03% (0.00031) | 5.75th | v4 (v2025.03.14) |
| Jan 22, 2025 | 0.04% (0.00043) | 11.37th | v3 (v2023.03.01) |
References (4)
- https://github.com/advisories/GHSA-wv8v-rmw2-25wc Advisory
- https://github.com/umbraco/Umbraco-CMS/commit/d4f8754f933895b3a329296e25ddea6f84a0aea2 x_refsource_MISCPatch
- https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-wv8v-rmw2-25wc x_refsource_CONFIRMVendor Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2025-24012
| Link | Providers | Tags |
|---|---|---|
| https://github.com/advisories/GHSA-wv8v-rmw2-25wc | Advisory | |
| https://github.com/umbraco/Umbraco-CMS/commit/d4f8754f933895b3a329296e25ddea6f84a0aea2 | x_refsource_MISCPatch | |
| https://github.com/umbraco/Umbraco-CMS/security/advisories/GHSA-wv8v-rmw2-25wc | x_refsource_CONFIRMVendor Advisory | |
| https://nvd.nist.gov/vuln/detail/CVE-2025-24012 |
Change history (0)
No recorded changes yet.