Auth bypass in Tamara Checkout
CVE-2026-16962
The Tamara Checkout WordPress plugin through 1.9.9.20 does not verify the order key, a nonce, or any capability on its public payment cancel/fail return URLs, changing a WooCommerce order's status based solely on an attacker-supplied numeric order id, so an unauthenticated attacker can cancel or fail arbitrary orders store-wide by enumerating ids (triggering downstream stock-release and notification side-effects).
Vulnerability class: Broken Access Control
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.
Affected products
- Unknown Tamara Checkout
Weakness classification (CWE)
References
- contact@wpscan.com (technical-description, exploit, vdb-entry)
Frequently asked questions
- What is CVE-2026-16962?
- CVE-2026-16962 is a medium-severity vulnerability in Tamara Checkout, classified under Missing Authorization. CVSS score: 5.3/10. Published 2026-08-21.
- How severe is CVE-2026-16962?
- Medium severity. CVSS v3 base score is 5.3 out of 10.