---
title: "CVE-2026-55826: stape.io GTM Server Side - Broken Access Control"
description: "stape.io GTM Server Side plugin 2.0.0 to < 2.1.48 contains an information disclosure vulnerability caused by improper WooCommerce purchase event tracking, letting unauthenticated attackers access other customers' full order data including PII, exploit requires no authentication."
url: https://panop.io/threat-heartbeat/CVE-2026-55826/
---

# CVE-2026-55826 stape.io GTM Server Side - Broken Access Control

stape.io GTM Server Side plugin 2.0.0 to < 2.1.48 contains an information disclosure vulnerability caused by improper WooCommerce purchase event tracking, letting unauthenticated attackers access other customers' full order data including PII, exploit requires no authentication.

CVSS base score 8.7 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.59% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-55826)

## Details

Type

Broken Access Control

Impact

Information Disclosure

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

Published

23 October 2026

Updated

25 October 2026

Weakness

[CWE-200](https://cwe.mitre.org/data/definitions/200.html)

## Vendor fix

Update to version 2.1.48 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-55826](https://nvd.nist.gov/vuln/detail/CVE-2026-55826)
- [https://github.com/stape-io/gtm-server-side-wordpress-plugin/commit/9ff46a050028c40fad5416f2fa35be574c823434](https://github.com/stape-io/gtm-server-side-wordpress-plugin/commit/9ff46a050028c40fad5416f2fa35be574c823434)
- [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/releases/tag/2.1.48)
- [https://github.com/stape-io/gtm-server-side-wordpress-plugin/security/advisories/GHSA-j5j2-gr8c-8rvf](https://github.com/stape-io/gtm-server-side-wordpress-plugin/security/advisories/GHSA-j5j2-gr8c-8rvf)
- [https://github.com/stape-io/gtm-server-side-wordpress-plugin/tree/v2.1.48](https://github.com/stape-io/gtm-server-side-wordpress-plugin/tree/v2.1.48)
- [http://github.com/stape-io/gtm-server-side-wordpress-plugin/tree/v2.1.47](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/702898f57772279ca63d3f800336c1803103ea41](https://github.com/stape-io/gtm-server-side-wordpress-plugin/commit/702898f57772279ca63d3f800336c1803103ea41)

[← All CVEs](https://panop.io/threat-heartbeat/)

## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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