VULNERABILITY INTELLIGENCE

CVE-2026-58402

CVSS score5.4 MEDIUM
EPSS probability0.30%
CISA KEVNot currently listed
Published2026-07-06
Last modified2026-10-25
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Description

Hugo is a static site generator. From 0.60.0 until 0.163.3, Hugo's default code-block renderer wrote the Markdown code-fence language or info-string into the code class="language-…" data-lang="…" wrapper without HTML escaping. A fence info-string containing a quote and a script payload breaks out of the attribute and injects a live script element. This issue is fixed in 0.163.3.

Weakness classification

  • security-advisories@github.com: CWE-79

Primary references