apostrophecms apostrophe up to 1.4.2 cross site scripting

Summaryinfo

A vulnerability, which was classified as problematic, was found in apostrophecms apostrophe up to 1.4.2. The impacted element is an unknown function. The manipulation results in cross site scripting. This vulnerability is identified as CVE-2026-53608. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability was found in apostrophecms apostrophe up to 1.4.2. It has been classified as problematic. Affected is some unknown functionality. 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. CVE summarizes:

ApostropheCMS is an open-source Node.js content management system. Versions up to and including 1.4.2 of the `@apostrophecms/seo` package injects the Google Analytics Tracking ID (`seoGoogleTrackingId`) and Google Tag Manager ID (`seoGoogleTagManager`) directly into `` tag bodies using JavaScript template literals without any sanitization or validation. Any user with editor-level access (the default role for content managers) can set these fields to a malicious value, resulting in stored XSS that executes on every page for every visitor of the site. As of time of publication, no known patched versions are available.

The advisory is available at github.com. This vulnerability is traded as CVE-2026-53608 since 06/09/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. Successful exploitation requires user interaction by the victim. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1059.007 by the MITRE ATT&CK project.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• apostrophecms

Name

• apostrophe

Version

• 1.4.0
• 1.4.1
• 1.4.2

Website

• Product: https://github.com/apostrophecms/apostrophe/

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