CVE-2026-55826
High
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.
SeverityHigh
CVSS8.7
Exploit probability—
ProductStape-io Gtm-server-side-wordpress-plugin
PublishedOct 23, 2026
First seenOct 23, 2026
Weakness typeCWE-200Sensitive information exposure
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| stape-io gtm-server-side-wordpress-plugin | >= 2.0.0, < 2.1.48 | — |
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