CVE-2024-10761
CVE-2024-10761 is a Cross-site Scripting (XSS) vulnerability in Umbraco.Cms. 1 public exploit reference exists, so weaponization risk is real. O3 Security confirms whether CVE-2024-10761 is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.
Umbraco CMS Dashboard frame cross site scripting
Real-World Exposure
Umbraco.Cms.NETUmbraco.Cms.NETUmbraco.Cms.NETUmbraco.Cms.NETUmbraco.Cms.Web.Common.NETUmbraco.Cms.Web.Common.NETUmbraco.Cms.Web.Common.NETUmbraco.Cms.Web.CommonReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects NuGet packages — download data is not available via public APIs for these ecosystems.
Description
A vulnerability was found in Umbraco CMS up to 10.7.7/12.3.6/13.5.2/14.3.1/15.1.1. It has been classified as problematic. Affected is an unknown function of the file /Umbraco/preview/frame?id{} of the component Dashboard. The manipulation of the argument culture leads to cross site scripting. It is possible to launch the attack remotely. The exploit has been disclosed to the public and may be used. Upgrading to version 10.8.8, 13.5.3, 14.3.2 and 15.1.2 is able to address this issue. It is recommended to upgrade the affected component.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| .NETNuGet | Umbraco.Cms | ≥ 11.0.0&&< 13.5.3 | 13.5.3 |
| .NETNuGet | Umbraco.Cms | ≥ 14.0.0&&< 14.3.2 | 14.3.2 |
| .NETNuGet | Umbraco.Cms | ≥ 15.0.0&&< 15.1.2 | 15.1.2 |
| .NETNuGet | Umbraco.Cms | ≥ 10.8.7&&< 10.8.8 | 10.8.8 |
| .NETNuGet | Umbraco.Cms.Web.Common | ≥ 11.0.0&&< 13.5.3 | 13.5.3 |
| .NETNuGet | Umbraco.Cms.Web.Common | ≥ 14.0.0&&< 14.3.2 | 14.3.2 |
Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for Umbraco.Cms. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Fix
Update Umbraco.Cms to 13.5.3 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2024-10761 is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 pinpoints whether CVE-2024-10761 is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.
Tailored to CVE-2024-10761. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is CVE-2024-10761 in your dependencies?
O3 detects CVE-2024-10761 across NuGet dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.