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CVE-2026-58402

Hugo default code block renderer XSS via unescaped code-fence language PUBLISHED

Description (CNA)

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.

Affected (CNA)

Vendor / productVersions
gohugoio / hugoaffected >= 0.60.0, < 0.163.3

CWE

CWE-79

References

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.