HiEventsDev Hi.Events up to 1.10.x Event JSON.stringify event title cross site scripting

Summaryinfo

A vulnerability was found in HiEventsDev Hi.Events up to 1.10.x. It has been declared as problematic. Affected by this vulnerability is the function JSON.stringify of the component Event Handler. Such manipulation of the argument event title leads to cross site scripting. This vulnerability is documented as CVE-2026-60119. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in HiEventsDev Hi.Events up to 1.10.x and classified as problematic. Affected by this issue is the function JSON.stringify of the component Event Handler. The manipulation of the argument event title 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. CVE summarizes:

Hi.Events through v1.10.0-beta contains a cross-site scripting vulnerability that allows authenticated attackers with event creation or edit permissions to inject arbitrary HTML and JavaScript by embedding a malicious event title containing the </script> sequence, which is not escaped by JSON.stringify() when embedded in inline script tags. Attackers can craft an event title that breaks out of the script context in the application/ld+json structured data block or server-side rehydrated state, causing the payload to execute in the browser of any user who views the public event page, including unauthenticated visitors and authenticated administrators.

The advisory is shared for download at github.com. This vulnerability is handled as CVE-2026-60119 since 07/08/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1059.007.

Upgrading to version 1.11.0 eliminates this vulnerability.

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Productinfo

Vendor

• HiEventsDev

Name

• Hi.Events

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4
• 1.5
• 1.6
• 1.7
• 1.8
• 1.9
• 1.10

Website

• Product: https://github.com/HiEventsDev/Hi.Events/

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