benjamine jsondiffpatch up to 0.7.6 Formatters formatters.html formatters.html.format cross site scripting

Summaryinfo

A vulnerability was found in benjamine jsondiffpatch up to 0.7.6. It has been classified as problematic. This vulnerability affects the function formatters.html.format of the file formatters.html of the component Formatters. Performing a manipulation results in cross site scripting. This vulnerability is reported as CVE-2026-122234. The attack is possible to be carried out remotely. No exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as problematic, was found in benjamine jsondiffpatch up to 0.7.6. This affects the function formatters.html.format of the file formatters.html of the component Formatters. The manipulation with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as 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. This is going to have an impact on integrity. The summary by CVE is:

jsondiffpatch before 0.7.7 contains a cross-site scripting vulnerability that allows attackers to inject markup by supplying an unescaped array-move destination index in a delta. Attackers who control a delta passed to formatters.html.format() or formatters.annotated.format() can embed script that executes in the application's origin when output is rendered.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-122234 since 11/04/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. No form of authentication is needed for exploitation. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1059.007 according to MITRE ATT&CK.

By approaching the search of inurl:formatters.html it is possible to find vulnerable targets with Google Hacking.

Upgrading to version 0.7.7 eliminates this vulnerability.

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Productinfo

Vendor

• benjamine

Name

• jsondiffpatch

Version

• 0.7.0
• 0.7.1
• 0.7.2
• 0.7.3
• 0.7.4
• 0.7.5
• 0.7.6

Website

• Product: https://github.com/benjamine/jsondiffpatch/

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