CVE-2026-107252 Drupal CVE debrief

Who should care

Drupal site administrators and maintainers who use the MathJax module should assess their exposure and prioritize upgrading to version 4.1.2 or later. If immediate upgrade is not possible, applying temporary mitigations as described in the MathJax Safe-mode documentation is recommended.

Why it matters

The Drupal MathJax module's default configurations do not escape JavaScript within TeX, potentially leading to security issues. Defenders should prioritize upgrading to version 4.1.2 or later, or apply temporary mitigations. Evidence is limited to the supplied source corpus.

• Defenders should verify and update their Drupal MathJax module configurations to prevent potential security issues
• Site administrators may need to apply temporary mitigations if immediate upgrade is not possible
• Vulnerability requires verification of affected versions and remediation priority

Technical summary

The Drupal MathJax module integrates MathJax into Drupal sites. The module's default configurations do not escape JavaScript within TeX, potentially leading to security issues. Version 4.1.2 addresses this configuration issue. Users should upgrade to the latest version or apply temporary mitigations. Affected product context indicates that Drupal site administrators and maintainers who use the MathJax module should assess their exposure. Defensive impact involves prioritizing upgrades or applying temporary mitigations. Source-grounded technical framing suggests that evidence is limited to the supplied source corpus.

Defensive priority

Defenders should prioritize upgrading to version 4.1.2 or later of the Drupal MathJax module to address the configuration issue. If immediate upgrade is not possible, modifying CDN URLs or custom MathJax JavaScript configurations according to the MathJax Safe-mode instructions can serve as a temporary mitigation.

Recommended defensive actions

• Confirm whether affected product deployments exist in managed environments and assign an owner for follow-up.
• Review the supplied official advisory or CVE record to validate affected scope, severity, and vendor guidance.
• Plan vendor-supported updates or mitigations through normal change control where exposure is confirmed.
• Review compensating controls for exposed systems while remediation is scheduled and verified.
• Check relevant monitoring, detection, and logs for exposed assets that need extra review.
• Track exceptions, retest remediated assets, and close the item only after evidence is documented.
• Upgrade to version 4.1.2 or later of the Drupal MathJax module

Evidence notes

The Drupal MathJax module's configurations do not escape JavaScript within TeX, which could lead to security vulnerabilities. The module has been updated to version 4.1.2, which addresses this issue. Users are advised to upgrade to the latest version or apply temporary mitigations as described in the MathJax Safe-mode documentation.

Sources and references

Methodology and review provenance

AI-assisted synthesis based on stored public vulnerability evidence. System validation, approval state, and publication status do not by themselves establish human review of this revision. PatchSiren helps prioritize defensive review and does not prove exposure or remediation on any system.