Bug 2497467 (CVE-2026-58402) - CVE-2026-58402 github.com/gohugoio/hugo: Hugo: Cross-site Scripting via unescaped code-fence language in default code block renderer
Summary: CVE-2026-58402 github.com/gohugoio/hugo: Hugo: Cross-site Scripting via unesc...
Keywords:
Status: NEW
Alias: CVE-2026-58402
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Product Security
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Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-07-06 20:02 UTC by OSIDB Bzimport
Modified: 2026-07-28 06:52 UTC (History)
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Description OSIDB Bzimport 2026-07-06 20:02:55 UTC 
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.
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