Vulnerability Description
The GTM Server Side plugin by stape.io implements server-side tracking on WordPress websites. From version 2.0.0 to before version 2.1.48, the WooCommerce purchase event tracking mechanism allows an unauthenticated attacker to trigger the rendering of another customer's full order data — including personally identifiable information (PII) — into the page's JavaScript dataLayer. This issue has been patched in version 2.1.48.
Related Weaknesses (CWE)
References
- http://github.com/stape-io/gtm-server-side-wordpress-plugin/tree/v2.1.47
- https://github.com/stape-io/gtm-server-side-wordpress-plugin/commit/702898f57772
- https://github.com/stape-io/gtm-server-side-wordpress-plugin/commit/9ff46a050028
- https://github.com/stape-io/gtm-server-side-wordpress-plugin/releases/tag/2.1.48
- https://github.com/stape-io/gtm-server-side-wordpress-plugin/security/advisories
- https://github.com/stape-io/gtm-server-side-wordpress-plugin/tree/v2.1.48
FAQ
What is CVE-2026-55826?
CVE-2026-55826 is a documented vulnerability. The GTM Server Side plugin by stape.io implements server-side tracking on WordPress websites. From version 2.0.0 to before version 2.1.48, the WooCommerce purchase event tracking mechanism allows an u...
How severe is CVE-2026-55826?
CVSS scoring is not yet available for CVE-2026-55826. Check NVD for updates.
Is there a patch for CVE-2026-55826?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.