arnog MathLive up to 0.109.x Text Mode Escaping atom-to-math-ml.ts cross site scripting

Summaryinfo

A vulnerability marked as problematic has been reported in arnog MathLive up to 0.109.x. This affects the function Box.toMarkup/xmlEscape/scanText/convertLatexToMarkup/convertLatexToMathMl/MathfieldElement.createHTML of the file src/core/box.ts/src/formats/atom-to-math-ml.ts of the component Text Mode Escaping. The manipulation leads to cross site scripting. This vulnerability is uniquely identified as CVE-2026-54705. The attack is possible to be carried out remotely. No exploit exists.

Detailsinfo

A vulnerability was found in arnog MathLive up to 0.109.x. It has been rated as problematic. This issue affects the function Box.toMarkup/xmlEscape/scanText/convertLatexToMarkup/convertLatexToMathMl/MathfieldElement.createHTML of the file src/core/box.ts/src/formats/atom-to-math-ml.ts of the component Text Mode Escaping. 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:

MathLive provides web components for math display and input. Prior to 0.110.0, MathLive fails to escape text-mode content in \text{} and \mbox{} commands in Box.toMarkup at src/core/box.ts, in xmlEscape, scanText, and text-mode output in src/formats/atom-to-math-ml.ts, and through convertLatexToMarkup, convertLatexToMathMl, <math-span>, <math-div>, and the default identity MathfieldElement.createHTML, allowing malicious input to run arbitrary JavaScript when rendered. This issue is fixed in version 0.110.0.

It is possible to read the advisory at github.com. The identification of this vulnerability is CVE-2026-54705 since 06/16/2026. 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. 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.

Upgrading to version 0.110.0 eliminates this vulnerability.

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Productinfo

Vendor

• arnog

Name

• MathLive

Version

• 0.109

Website

• Product: https://github.com/arnog/mathlive/

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