How severe is GHSA-xxc6-35r7-796w?

GHSA-xxc6-35r7-796w has a CVSS score of 0/10, rated NONE. Review your exposure and patch according to your risk tolerance.

Which packages are affected by GHSA-xxc6-35r7-796w?

GHSA-xxc6-35r7-796w affects the following packages: Umbraco.CMS (NuGet), Umbraco.CMS (NuGet), Umbraco.CMS (NuGet). Ecosystems affected: NuGet.

How do I fix GHSA-xxc6-35r7-796w?

Update Umbraco.CMS to 8.18.10 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-xxc6-35r7-796w is resolved across your whole dependency graph.

How do I detect GHSA-xxc6-35r7-796w in my NuGet dependencies?

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.

How do I mitigate GHSA-xxc6-35r7-796w if there is no patch (or I can't update yet)?

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 does O3 Security protect against GHSA-xxc6-35r7-796w?

O3 pinpoints whether GHSA-xxc6-35r7-796w is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.

Is GHSA-xxc6-35r7-796w actively exploited in the wild?

No public exploit code has been indexed for GHSA-xxc6-35r7-796w yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What type of vulnerability is GHSA-xxc6-35r7-796w?

GHSA-xxc6-35r7-796w is classified as Cross-site Scripting (XSS) (CWE-79). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

When was GHSA-xxc6-35r7-796w published, and has it been updated?

GHSA-xxc6-35r7-796w was published on December 13, 2023 and was last updated on February 16, 2024. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

.NET NuGet

GHSA-xxc6-35r7-796w

NONE

GHSA-xxc6-35r7-796w is a none-severity (CVSS 0) Cross-site Scripting (XSS) vulnerability in Umbraco.CMS. O3 Security confirms whether GHSA-xxc6-35r7-796w is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.

Possible injection of HTML into user invite mails

Also known asCVE-2023-38694

Published

Dec 13, 2023

Updated

Feb 16, 2024

Affected

3 pkgs

Patched

3 / 3

Exploits

None indexed

Real-World Exposure

3 pkgs affected

.NETUmbraco.CMS.NETUmbraco.CMS.NETUmbraco.CMS

Real-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

Impact

A user with access to a specific part of the backoffice is able to inject HTML code into a form where it is not intended.

Explanation of the vulnerability

A person with access to the backoffice and the "users" section could send a user invite and inject HTML code into the invite message.

Affected Packages

3 total 3 fixed

Ecosystem	Package	Vulnerable range	Fix
.NETNuGet	`Umbraco.CMS`	≥ 8.0.0&&< 8.18.10	8.18.10
.NETNuGet	`Umbraco.CMS`	≥ 9.0.0&&< 10.7.0	10.7.0
.NETNuGet	`Umbraco.CMS`	≥ 11.0.0&&< 12.1.0	12.1.0

Detection & mitigation playbook

Open-source dependency

Detect
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 8.18.10 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-xxc6-35r7-796w 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 GHSA-xxc6-35r7-796w 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 GHSA-xxc6-35r7-796w. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.

Frequently Asked Questions

#### Impact A user with access to a specific part of the backoffice is able to inject HTML code into a form where it is not intended. #### Explanation of the vulnerability A person with access to the backoffice and the "users" section could send a user invite and inject HTML code into the invite message.

O3 Security · Impact-Aware SCA

Is GHSA-xxc6-35r7-796w in your dependencies?

O3 detects GHSA-xxc6-35r7-796w across NuGet dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

Scan my dependencies How O3 SCA works