What is CVE-2024-54138?

CVE-2024-54138 is a medium-severity vulnerability in Microsoft Nugetgallery, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2024-12-06.

How severe is CVE-2024-54138?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Microsoft Nugetgallery

CVE-2024-54138

NuGet Gallery is a package repository that powers nuget.org. The NuGetGallery has a security vulnerability related to its handling of autolinks in Markdown content. While the platform properly filters out JavaScript from standard links, it does not adequately sanitize autolinks. This oversight allows attackers to exploit autolinks as a vector for Cross-Site Scripting (XSS) attacks. This vulnerability is fixed in 2024.12.06.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2024-12-06 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.004 (29.2th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 29th percentile — 29.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: +0.000

Affected products

Microsoft Nugetgallery
Nuget Nugetgallery — versions < 2024.12.06

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/NuGet/NuGetGallery/security/advisories/GHSA-x448-p234-x5p8 (Vendor Advisory)
github.com/NuGet/NuGetGallery/pull/10296 (Patch, Issue Tracking)

Frequently asked questions

What is CVE-2024-54138?: CVE-2024-54138 is a medium-severity vulnerability in Microsoft Nugetgallery, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2024-12-06.
How severe is CVE-2024-54138?: Medium severity. CVSS v3 base score is 6.1 out of 10.