Hugo is a static site generator. From 0.60.0 to before 0.159.2, links and image links in the default markdown to HTML renderer are not properly escaped. Hugo users who trust their Markdown content or have custom render hooks for links and images are not affected. This vulnerability is fixed in 0.159.2.

Metrics

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction Passive

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact None

Subsequent System Confidentiality Impact Low

Subsequent System Integrity Impact Low

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Changed

Confidentiality Impact Low

Integrity Impact Low

Availability Impact None

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploitation none

Automatable no

Technical Impact partial

Affected Vendors & Products

Vendors Products
Gohugo
  • Hugo

Configuration 1 [-]

OR cpe:2.3:a:gohugo:hugo:*:*:*:*:*:linux:*:*
cpe:2.3:a:gohugo:hugo:*:*:*:*:*:macos:*:*
cpe:2.3:a:gohugo:hugo:*:*:*:*:*:windows:*:*

No data.

References
Link Providers
https://github.com/gohugoio/hugo/security/advisories/GHSA-mcv8-8m8x-48pg cve-icon cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-35166 cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-35166 cve-icon
History

Mon, 20 Apr 2026 18:45:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:gohugo:hugo:*:*:*:*:*:linux:*:*
cpe:2.3:a:gohugo:hugo:*:*:*:*:*:macos:*:*
cpe:2.3:a:gohugo:hugo:*:*:*:*:*:windows:*:*
Metrics cvssV3_1

{'score': 4.6, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N'}

 cvssV3_1

{'score': 5.4, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N'}

Tue, 07 Apr 2026 09:45:00 +0000

Type Values Removed Values Added
First Time appeared Gohugo
Gohugo hugo
Vendors & Products Gohugo
Gohugo hugo

Tue, 07 Apr 2026 00:00:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

 cvssV3_1

{'score': 4.6, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N'}

threat_severity

Moderate

Mon, 06 Apr 2026 20:00:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Mon, 06 Apr 2026 18:00:00 +0000

Type Values Removed Values Added
Description Hugo is a static site generator. From 0.60.0 to before 0.159.2, links and image links in the default markdown to HTML renderer are not properly escaped. Hugo users who trust their Markdown content or have custom render hooks for links and images are not affected. This vulnerability is fixed in 0.159.2.
Title Hugo does not properly escape some Markdown links
Weaknesses CWE-79
References
Metrics cvssV4_0

{'score': 5.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N'}
cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-04-06T17:37:05.643Z

Updated: 2026-04-06T18:02:37.432Z

Reserved: 2026-04-01T17:26:21.133Z

Link: CVE-2026-35166

cve-icon Vulnrichment

Updated: 2026-04-06T18:02:30.593Z

cve-icon NVD

Status : Analyzed

Published: 2026-04-06T18:16:43.060

Modified: 2026-04-20T18:34:45.460

Link: CVE-2026-35166

cve-icon Redhat

Severity : Moderate

Publid Date: 2026-04-06T17:37:05Z

Links: CVE-2026-35166 - Bugzilla