CVE-2026-88813: YITH WooCommerce Gift Cards price inflation in discounted purchases

CVE-2026-88813 · Severity: info · Published 2026-11-11

The YITH WooCommerce Gift Cards plugin for WordPress fails to verify that issued gift card values match the amount customers actually paid. By applying a store coupon during checkout, customers can receive a gift card worth significantly more than their purchase price, allowing them to extract profit from the store's gift card system.

Vendors: YITH.

Quick answers

Is CVE-2026-88813 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-88813 being exploited in the wild.
How severe is CVE-2026-88813?
Informational severity, published 11 November 2026.
Which products and versions are affected?
YITH WooCommerce Gift Cards through 4.39.0.
Is there a fix for CVE-2026-88813?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-88813 attacked?
It is attacked over the network, in a web application.
Am I affected by CVE-2026-88813?
Check whether you run YITH WooCommerce Gift Cards at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The plugin credits newly issued gift cards with the pre-discount item price rather than the actual amount paid, allowing unauthenticated customers to exploit this price reconciliation flaw. An attacker applies a standard coupon at checkout to reduce the purchase price, but the gift card is still credited at the full pre-discount value. This access control bypass (CWE-284) requires only customer-level access to the shopping cart and checkout flow.

Affected products

  • YITH WooCommerce Gift Cards through 4.39.0

Timeline

  • 2026-11-09: disclosed
  • 2026-11-11: advisory

References

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.