VYPR
← All advisories
Medium severity6.1NVD Advisory· Published Apr 15, 2026· Updated Jun 17, 2026

CVE-2026-5160

CVE-2026-5160

Description

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.

AI Insight

LLM-synthesized narrative grounded in this CVE's description and references.

Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
github.com/yuin/goldmark/renderer/htmlGo
< 1.7.171.7.17

Affected products

442

Patches

Vulnerability mechanics

References

4

News mentions

0

No linked articles in our index yet.