gohugoio hugo up to 0.159.1 Link cross site scripting

CVSS Meta Temp Score
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CTI Interest Score
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4.1$0-$5k0.00

Summaryinfo

A vulnerability was found in gohugoio hugo up to 0.159.1. It has been classified as problematic. This vulnerability affects unknown code of the component Link Handler. This manipulation causes cross site scripting. This vulnerability appears as CVE-2026-35166. The attack may be initiated remotely. There is no available exploit. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in gohugoio hugo up to 0.159.1. It has been declared as problematic. Affected by this vulnerability is an unknown code block of the component Link Handler. The manipulation with an unknown input leads to a cross site scripting vulnerability. The CWE definition for the vulnerability is CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. As an impact it is known to affect integrity. The summary by CVE is:

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.

The advisory is shared at github.com. This vulnerability is known as CVE-2026-35166 since 04/01/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

The vulnerability scanner Nessus provides a plugin with the ID 305105 (Linux Distros Unpatched Vulnerability : CVE-2026-35166), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 0.159.2 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (305105). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

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Version

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Cross site scripting
CWE: CWE-79 / CWE-94 / CWE-74
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 305105
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-35166

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: hugo 0.159.2

Timelineinfo

04/01/2026 CVE reserved
04/06/2026 +5 days Advisory disclosed
04/06/2026 +0 days VulDB entry created
04/07/2026 +1 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-mcv8-8m8x-48pg
Status: Confirmed

CVE: CVE-2026-35166 (🔒)
GCVE (CVE): GCVE-0-2026-35166
GCVE (VulDB): GCVE-100-355633

Entryinfo

Created: 04/06/2026 21:23
Updated: 04/07/2026 13:37
Changes: 04/06/2026 21:23 (68), 04/07/2026 13:37 (2)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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