CVE-2026-58402

Name	CVE-2026-58402
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.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
hugo (PTS)	bullseye	0.80.0-6	vulnerable
	bullseye (security)	0.80.0-6+deb11u1	vulnerable
	bookworm	0.111.3-1	vulnerable
	trixie	0.131.0-1	vulnerable
	forky	0.161.1-1	vulnerable
	sid	0.162.1-1	vulnerable

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
hugo	source	(unstable)	(unfixed)

Notes

https://github.com/gohugoio/hugo/security/advisories/GHSA-q76j-gcg9-vxc6
https://github.com/gohugoio/hugo/pull/15051
Fixed by: https://github.com/gohugoio/hugo/commit/ce1a7e0bce3713af40496ded3c2c0ceeed49231d (v0.163.3)