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TI-2025-17779 Aliases CVE-2025-24012GHSA-wv8v-rmw2-25wc

Umbraco Backoffice Components Have XSS/HTML Injection Vulnerability

Priority LOW 24CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA and GitHub. Impact type from CWE-79.

Summary

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00275 19th percentileScored 2026-11-07
Fix Fixed Umbraco-CMS (umbraco): 14.3.2, 15.1.2Umbraco.Cms.StaticAssets (NuGet): 14.3.2, 15.1.2+1 more product

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

VendorProductAffected versionsFixed inStatusSource
umbracoUmbraco-CMS14.0.0 to before 14.3.2; 15.0.0 to before 15.1.214.3.2, 15.1.2Patch availableCNA
—Umbraco.Cms.StaticAssets (NuGet)14.0.0 to before 14.3.214.3.2Patch availableGHSA-wv8v-rmw2-25wc
—Umbraco.Cms.StaticAssets (NuGet)15.0.0 to before 15.1.215.1.2Patch availableGHSA-wv8v-rmw2-25wc
—@umbraco-cms/backoffice (npm)14.0.0 to before 14.3.214.3.2Patch availableGHSA-wv8v-rmw2-25wc
—@umbraco-cms/backoffice (npm)15.0.0 to before 15.1.215.1.2Patch availableGHSA-wv8v-rmw2-25wc
  • Umbraco-CMS Vendorumbraco Affected 14.0.0 to before 14.3.2; 15.0.0 to before 15.1.2 Fixed in 14.3.2, 15.1.2 Patch available CNA
  • Umbraco.Cms.StaticAssets (NuGet) Vendor— Affected 14.0.0 to before 14.3.2 Fixed in 14.3.2 Patch available GHSA-wv8v-rmw2-25wc
  • Umbraco.Cms.StaticAssets (NuGet) Vendor— Affected 15.0.0 to before 15.1.2 Fixed in 15.1.2 Patch available GHSA-wv8v-rmw2-25wc
  • @umbraco-cms/backoffice (npm) Vendor— Affected 14.0.0 to before 14.3.2 Fixed in 14.3.2 Patch available GHSA-wv8v-rmw2-25wc
  • @umbraco-cms/backoffice (npm) Vendor— Affected 15.0.0 to before 15.1.2 Fixed in 15.1.2 Patch available GHSA-wv8v-rmw2-25wc

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:umbraco:umbraco_cms:*:*:*:*:*:*:*:*14.0.0 to before 14.3.2; 15.0.0 to before 15.1.2Vulnerableumbraco
  • cpe:2.3:a:umbraco:umbraco_cms:*:*:*:*:*:*:*:* Versions 14.0.0 to before 14.3.2; 15.0.0 to before 15.1.2 Vulnerable ·umbraco

Remediation

  • Fix · CNA Umbraco-CMS (umbraco) Fixed in 14.3.2, 15.1.2
  • Fix · GHSA-wv8v-rmw2-25wc Umbraco.Cms.StaticAssets (NuGet) Fixed in 14.3.2 Advisory →
  • Fix · GHSA-wv8v-rmw2-25wc Umbraco.Cms.StaticAssets (NuGet) Fixed in 15.1.2 Advisory →
  • Fix · GHSA-wv8v-rmw2-25wc @umbraco-cms/backoffice (npm) Fixed in 14.3.2 Advisory →
  • Fix · GHSA-wv8v-rmw2-25wc @umbraco-cms/backoffice (npm) Fixed in 15.1.2 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-24012
  2. 2026-10-03 Alias added: GHSA-wv8v-rmw2-25wc

References

Patch 1

Advisory 2

Other 1

  • 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
See all 56 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences