html-template up to 1.25.8/1.26.1 on Go cross site scripting

Summaryinfo

A vulnerability has been found in html-template up to 1.25.8/1.26.1 on Go and classified as problematic. Impacted is an unknown function. The manipulation leads to cross site scripting. This vulnerability is traded as CVE-2026-32289. It is possible to initiate the attack remotely. There is no exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in html-template up to 1.25.8/1.26.1 on Go and classified as problematic. This issue affects an unknown part. The manipulation with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to 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. Impacted is integrity. The summary by CVE is:

Context was not properly tracked across template branches for JS template literals, leading to possibly incorrect escaping of content when branches were used. Additionally template actions within JS template literals did not properly track the brace depth, leading to incorrect escaping being applied. These issues could cause actions within JS template literals to be incorrectly or improperly escaped, leading to XSS vulnerabilities.

The identification of this vulnerability is CVE-2026-32289 since 03/11/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. 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 305654 (Linux Distros Unpatched Vulnerability : CVE-2026-32289), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 1.25.9 or 1.26.2 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (305654) and CERT Bund (WID-SEC-2026-1006). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Affected

• Red Hat Ansible Automation Platform
• Google Container-Optimized OS
• Amazon Linux 2
• Red Hat Enterprise Linux
• SUSE Linux
• Oracle Linux
• Red Hat OpenShift
• SUSE openSUSE
• RESF Rocky Linux
• Red Hat OpenStack
• Microsoft Azure Linux
• Golang Go
• Open Source CoreDNS
• IBM Business Automation Workflow
• Open Source Fleet
• Splunk Splunk Enterprise

Productinfo

Name

• html-template

Version

• 1.25.0
• 1.25.1
• 1.25.2
• 1.25.3
• 1.25.4
• 1.25.5
• 1.25.6
• 1.25.7
• 1.25.8
• 1.26.0
• 1.26.1

CPE 2.3info

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CPE 2.2info

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Entryinfo

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

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