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Medium

XSS/HTML Injection Vulnerability in Umbraco Preview Badge

  • Disclosed: 21.01.2025
  • Updated: 11.10.2026 11:23

Impact

Authenticated users are able to exploit an XSS vulnerability when viewing previewed content.

Patches

Will be patched in 10.8.8, 13.5.3, 14.3.2 and 15.1.2.

Workarounds

None available.

Affected software

Click a technology to see all vulnerabilities affecting it.

PlatformPackageVulnerable versionsFixed in
.NET (NuGet) Umbraco.Cms >= 11.0.0, < 13.5.3, >= 14.0.0, < 14.3.2, >= 15.0.0, < 15.1.2, >= 10.8.7, < 10.8.8 13.5.3, 14.3.2, 15.1.2, 10.8.8
.NET (NuGet) Umbraco.Cms.Web.Common >= 11.0.0, < 13.5.3, >= 14.0.0, < 14.3.2, >= 15.0.0, < 15.1.2, >= 10.8.7, < 10.8.8 13.5.3, 14.3.2, 15.1.2, 10.8.8

References

CVSS score 4.3/10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N
Weakness (CWE)
CWE-79
Platform
.NET (NuGet)
Package
Umbraco.Cms, Umbraco.Cms.Web.Common
Disclosed
21.01.2025
Updated
11.10.2026 11:23

Sources and licenses

OSV / GitHub Advisory Database - GHSA-69cg-w8vm-h229 - CC BY 4.0

Vulnerability history: Umbraco.Cms

All published vulnerabilities of this package (.NET (NuGet)), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (29) in the archive
Total entries
29
First → latest
05.2022 09.2026
Without a fix
1
Exploited in attacks
0

Severity breakdown

  • High 5
  • Medium 17
  • Low 7

Disclosures per year

Severity:
  1. Umbraco: Delivery API leaks protected (Public Access) content through Content Picker / Multi-Node Tree Picker expansion
    High CVE-2026-69197 >= 12.0.0, < 13.15.1, >= 14.0.0-rc1, < 17.5.3, >= 18.0.0, < 18.0.2 13.15.1, 17.5.3, 18.0.2
  2. Umbraco Affected by Vertical Privilege Escalation via Missing Authorization Checks
    High · 7.2 CVE-2026-31834 >= 15.3.1, < 16.5.1, >= 17.0.0, < 17.2.2 16.5.1, 17.2.2
  3. Umbraco has a Management API Vulnerability to Path Traversal With Authenticated Users
    High · 8.8 CVE-2025-32017 >= 14.0.0--preview004, < 14.3.4, >= 15.0.0-rc1, < 15.3.1 14.3.4, 15.3.1
  4. XSS/HTML Injection Vulnerability in Umbraco Preview Badge this entry
    Medium · 4.3 CVE-2024-10761 >= 11.0.0, < 13.5.3, >= 14.0.0, < 14.3.2, >= 15.0.0, < 15.1.2, >= 10.8.7, < 10.8.8 13.5.3, 14.3.2, 15.1.2, 10.8.8
  5. Umbraco CMS vulnerable to CSRF
    High · 8.8 CVE-2015-8814 < 7.4.0 7.4.0
  6. Umbraco CMS vulnerable to CSRF
    High · 8.2 CVE-2015-8813 < 7.4.0 7.4.0

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