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

08 Jul 2026, 03:06

Type	Values Removed	Values Added
First Time		Gohugo hugo Gohugo
CPE		cpe:2.3:a:gohugo:hugo::::::::
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 5.4
References	~~() https://github.com/gohugoio/hugo/commit/ce1a7e0bce3713af40496ded3c2c0ceeed49231d -~~	() https://github.com/gohugoio/hugo/commit/ce1a7e0bce3713af40496ded3c2c0ceeed49231d - Patch
References	~~() https://github.com/gohugoio/hugo/pull/15051 -~~	() https://github.com/gohugoio/hugo/pull/15051 - Issue Tracking
References	~~() https://github.com/gohugoio/hugo/releases/tag/v0.163.3 -~~	() https://github.com/gohugoio/hugo/releases/tag/v0.163.3 - Release Notes
References	~~() https://github.com/gohugoio/hugo/security/advisories/GHSA-q76j-gcg9-vxc6 -~~	() https://github.com/gohugoio/hugo/security/advisories/GHSA-q76j-gcg9-vxc6 - Vendor Advisory

06 Jul 2026, 20:16

Type	Values Removed	Values Added
New CVE

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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