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CVE-2026-55826

HIGH 8.7 CVSS 4.0
Published
October 23, 2026
Last modified
October 29, 2026
NVD status
Deferred
Reported by
security-advisories@github.com
Weakness
CWE-200
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

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.

Affected products and versions

  • stape-io gtm-server-side-wordpress-plugin — Version >= 2.0.0, < 2.1.48

References

  • github.com http://github.com/stape-io/gtm-server-side-wordpress-plugin/tree/v2.1.47
  • github.com https://github.com/stape-io/gtm-server-side-wordpress-plugin/commit/702898f57772279ca63d3f800336c1803103ea41
  • github.com https://github.com/stape-io/gtm-server-side-wordpress-plugin/commit/9ff46a050028c40fad5416f2fa35be574c823434
  • github.com https://github.com/stape-io/gtm-server-side-wordpress-plugin/releases/tag/2.1.48
  • github.com https://github.com/stape-io/gtm-server-side-wordpress-plugin/security/advisories/GHSA-j5j2-gr8c-8rvf
  • github.com https://github.com/stape-io/gtm-server-side-wordpress-plugin/tree/v2.1.48
  • nvd.nist.gov Official NVD record