A AegiFlow
HIGHCVSS 8.7EPSS 0.2%

CVE-2026-53608

CVE-2026-53608 updated by NVD

Published
2026-07-31
Modified
2026-10-27
EPSS percentile
11%
Sources
github-advisory, nvd

Summary

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.

Affected packages

EcosystemPackageAffected versionsFixed versions
npm@apostrophecms/seo—1.5.0

Remediation: Upgrade to 1.5.0 or later.

References

Includes data from the GitHub Advisory Database, licensed under CC-BY 4.0.

Includes data from the National Vulnerability Database (NIST). NVD data is in the public domain; this page is not endorsed by NIST.

CVE® is a registered trademark of The MITRE Corporation. CVE content reproduced under the CVE Terms of Use; copyright designation © MITRE.

EPSS scores provided by the FIRST.org Exploit Prediction Scoring System.