CVE-2026-58402

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.

CVSS v3 5.4 MEDIUM

5.4^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.3 / Impact : 2.7

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction REQUIRED

Confidentiality Impact LOW

Integrity Impact LOW

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://github.com/gohugoio/hugo/commit/ce1a7e0bce3713af40496ded3c2c0ceeed49231d	Patch
https://github.com/gohugoio/hugo/pull/15051	Issue Tracking
https://github.com/gohugoio/hugo/releases/tag/v0.163.3	Release Notes
https://github.com/gohugoio/hugo/security/advisories/GHSA-q76j-gcg9-vxc6	Vendor Advisory

Configurations

Configuration 1 (hide)

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

History

No history.

Information

Published : 2026-07-06 20:16

Updated : 2026-07-08 03:06

NVD link : CVE-2026-58402

Mitre link : CVE-2026-58402

CVE.ORG link : CVE-2026-58402

JSON object : View

Products Affected

gohugo

hugo

CWE

CWE-79

Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

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