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CVE-2026-58402

5.1 medium SSVC exploitation: none Analyzed
NVD · CVE.org

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.

Fix

Patch, vendor advisory and mitigation references on NVD 2

Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.

Change history 1

  1. First seenCVSS 5.1 · gohugoNVD modified 2026-10-25 20:10

Affected (CPE criteria) 1

  • cpe:2.3:a:gohugo:hugo:*:*:*:*:*:*:*:*

References 4