CVE-2026-15213: Unknown Welcart E-Commerce

Medium severity, CVSS 5.3. EPSS: 0.2% chance of exploitation in the next 30 days.

The Welcart e-Commerce WordPress plugin before 2.11.33 does not verify the authenticity of its convenience-store / bank-transfer settlement callback: an unauthenticated request can flip an order from unpaid to settled purely from an order number and a status flag, with no signature, amount, or origin check. Because these are pay-later methods, an attacker can mark their own unpaid order as settled and obtain fulfilment without paying.

Affected products

• Unknown Welcart E-Commerce: before 2.11.33 (fixed in 2.11.33)

Published 2026-08-12. Last modified 2026-08-26.