High severityNVD Advisory· Published Oct 23, 2026
CVE-2026-55826
CVE-2026-55826
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
2- Range: 2.0.0 to <2.1.48
- Range: 2.0.0 to <2.1.48
Patches
Vulnerability mechanics
References
6- github.com/stape-io/gtm-server-side-wordpress-plugin/tree/v2.1.47nvd
- github.com/stape-io/gtm-server-side-wordpress-plugin/commit/702898f57772279ca63d3f800336c1803103ea41nvd
- github.com/stape-io/gtm-server-side-wordpress-plugin/commit/9ff46a050028c40fad5416f2fa35be574c823434nvd
- github.com/stape-io/gtm-server-side-wordpress-plugin/releases/tag/2.1.48nvd
- github.com/stape-io/gtm-server-side-wordpress-plugin/security/advisories/GHSA-j5j2-gr8c-8rvfnvd
- github.com/stape-io/gtm-server-side-wordpress-plugin/tree/v2.1.48nvd
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