How severe is GHSA-8qp8-9rpw-j46c?

GHSA-8qp8-9rpw-j46c has a CVSS score of 3.7/10, rated LOW. Review your exposure and patch according to your risk tolerance.

Which packages are affected by GHSA-8qp8-9rpw-j46c?

GHSA-8qp8-9rpw-j46c affects the following packages: Umbraco.CMS (NuGet), Umbraco.CMS (NuGet), Umbraco.CMS (NuGet). Ecosystems affected: NuGet.

How do I fix GHSA-8qp8-9rpw-j46c?

Update Umbraco.CMS to 8.18.10 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-8qp8-9rpw-j46c is resolved across your whole dependency graph.

How do I detect GHSA-8qp8-9rpw-j46c 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-8qp8-9rpw-j46c 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-8qp8-9rpw-j46c?

O3 pinpoints whether GHSA-8qp8-9rpw-j46c 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-8qp8-9rpw-j46c actively exploited in the wild?

No public exploit code has been indexed for GHSA-8qp8-9rpw-j46c 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-8qp8-9rpw-j46c?

GHSA-8qp8-9rpw-j46c is classified as Information Exposure (CWE-200). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation.

When was GHSA-8qp8-9rpw-j46c published, and has it been updated?

GHSA-8qp8-9rpw-j46c 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

.NET NuGet

Not in CISA KEV

LOW severity

GHSA-8qp8-9rpw-j46c

LOW

GHSA-8qp8-9rpw-j46c is a low-severity (CVSS 3.7) Information Exposure vulnerability in Umbraco.CMS. O3 Security confirms whether GHSA-8qp8-9rpw-j46c is actually reachable in your code before you act, and blocks exploitation at runtime until you patch.

SMTP misconfiguration leading to "Forgot Password" exploit that leaks registered user email.

Also known asCVE-2023-49274

Published

Dec 13, 2023

Updated

Feb 16, 2024

Affected

3 pkgs

Patched

3 / 3

Exploits

None indexed

Exploitation data as of Feb 16, 2024 · OSV.dev, NVD, FIRST.org (EPSS)

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 enumeration attack is possible when SMTP is not setup correctly, but reset password is enabled

Explanation of the vulnerability

Two different error messages was shown, based on if the user exists or not when using the forgot password functionality, when the SMTP was configured but do not response.

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&&< 10.8.1	10.8.1
.NETNuGet	`Umbraco.CMS`	≥ 11.0.0&&< 12.3.4	12.3.4

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-8qp8-9rpw-j46c 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-8qp8-9rpw-j46c 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-8qp8-9rpw-j46c. 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 enumeration attack is possible when SMTP is not setup correctly, but reset password is enabled #### Explanation of the vulnerability Two different error messages was shown, based on if the user exists or not when using the forgot password functionality, when the SMTP was configured but do not response.

O3 Security · Impact-Aware SCA

Is GHSA-8qp8-9rpw-j46c in your dependencies?

O3 detects GHSA-8qp8-9rpw-j46c across NuGet dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.

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