Thelia before 3.1.5 and 3.2.x before 3.2.4 contains a business logic vulnerability that allows authenticated customers to bypass coupon usage limits because usage is counted only when orders become paid. Attackers can place multiple pay-later orders while a usage remains, or cancel paid orders to inflate max_usage, gaining unlimited discounts.
https://github.com/thelia/thelia/security/advisories/GHSA-pq5m-7g9w-ppg8
https://github.com/thelia/thelia/releases/tag/3.2.4
https://github.com/thelia/thelia/releases/tag/3.1.5
https://github.com/thelia/thelia/commit/edb7078bfce5ea31b40868d340b0b49dcc6cf00c
https://github.com/thelia/thelia/commit/1c3ed9c7ad57fec8ea959aa2d2f506f9892777ea
https://github.com/thelia/thelia/blob/3.2.3/core/lib/Thelia/Action/Coupon.php
Published: 2026-10-19
Updated: 2026-10-19
Base Score: 4
Vector: CVSS2#AV:N/AC:L/Au:S/C:N/I:P/A:N
Severity: Medium
Base Score: 4.3
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Severity: Medium
Base Score: 5.3
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
Severity: Medium
EPSS: 0.00289