Auth bypass in Wava Payment Plugin
CVE-2026-87837
The Wava Payment Plugin WordPress plugin before 0.3.10 does not verify the authenticity of incoming payment-provider notifications, nor restrict who may send them, allowing unauthenticated attackers to change the status of any WooCommerce order in the store, including marking an unpaid order as paid and completed, and cancelling other customers' orders. In versions up to 0.3.7 the response additionally returns the affected order's billing details, disclosing customer names, addresses, email addresses and phone numbers to the same unauthenticated caller.
Vulnerability class: Broken Access Control
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
- Wava Payment Plugin
Weakness classification (CWE)
References
- wpscan.com/vulnerability/76da1b69-aa79-4e9e-a97a-bbaefdeb65fe/ (technical-description, exploit, vdb-entry)
Frequently asked questions
- What is CVE-2026-87837?
- CVE-2026-87837 is a medium-severity vulnerability in Wava Payment Plugin, classified under Missing Authorization. CVSS score: 5.3/10. Published 2026-10-21.
- How severe is CVE-2026-87837?
- Medium severity. CVSS v3 base score is 5.3 out of 10.