GHSA-c97m-vxhj-p7j6

Source

https://github.com/advisories/GHSA-c97m-vxhj-p7j6

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-c97m-vxhj-p7j6/GHSA-c97m-vxhj-p7j6.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-c97m-vxhj-p7j6

Aliases

CVE-2026-5160

Published

2026-04-17T15:31:17Z

Modified

2026-04-18T01:19:39.680319Z

Severity

6.1 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N CVSS Calculator
5.1 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:N/SC:L/SI:L/SA:N CVSS Calculator

Summary

goldmark vulnerable to Cross-site Scripting (XSS)

Details

Versions of the package github.com/yuin/goldmark/renderer/html before 1.7.17 are vulnerable to Cross-site Scripting (XSS) due to improper ordering of URL validation and normalization. The renderer validates link destinations using a prefix-based check (IsDangerousURL) before resolving HTML entities. This allows an attacker to bypass protocol filtering by encoding dangerous schemes using HTML5 named character references. For example, a payload such as javascript:alert(1) is not recognized as dangerous during validation, leading to arbitrary script execution in the context of applications that render the URL.

Database specific

{
    "cwe_ids": [
        "CWE-79"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-04-18T01:02:42Z",
    "nvd_published_at": "2026-04-15T06:16:13Z",
    "severity": "MODERATE"
}

References

Affected packages

Go / github.com/yuin/goldmark/renderer/html

Package

Name: github.com/yuin/goldmark/renderer/html; View open source insights on deps.dev
Purl: pkg:golang/github.com/yuin/goldmark/renderer/html

Affected ranges

Type: SEMVER
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.7.17

Database specific

source

"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/04/GHSA-c97m-vxhj-p7j6/GHSA-c97m-vxhj-p7j6.json"