YITH WooCommerce Gift Cards <= 4.38.0 - Unauthenticated Gift Card Balance Double-Spending
Strategic Overview
- Status
- Patched in 4.38.1
- Affected Plugin
- YITH WooCommerce Gift Cards
- Affected Version
<= 4.38.0- CVSS
- 5.3Medium
- Weakness type
- CWE-362 · Concurrent Execution using Shared Resource with Improper Synchronization
- CVE
CVE-2026-88814
At a glance
CVE-2026-88814 is a medium-severity Concurrent Execution using Shared Resource with Improper Synchronization vulnerability in the YITH WooCommerce Gift Cards WordPress plugin, affecting versions <= 4.38.0. It carries a CVSS score of 5.3 (reachable over the network; low attack complexity). Exploitation requires no authentication. The issue is fixed in version 4.38.1; sites on affected versions should update now. Disclosed November 2026, reported by Ryan Fabella.
Vulnerability Overview
The YITH WooCommerce Gift Cards plugin for WordPress is vulnerable to Race Condition in all versions up to, and including, 4.38.0. This is due to a non-atomic read-modify-write operation on gift card balance that allowed concurrent checkouts to bypass the balance check before it was decremented. This makes it possible for unauthenticated attackers to spend more than the funded value of a gift card by submitting simultaneous checkout requests, exploiting the non-atomic read-modify-write balance update. The attacker must possess a valid gift card code with a non-zero balance.
Technical Analysis
The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no privileges on the target site, and no interaction from a victim user.
CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization
The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.
Remediation
Update to version 4.38.1, or a newer patched version
How does WordSec protect against this?
This one needs no account at all, which puts it outside what login hardening can reach; WordSec's login security narrows the account-level paths around it, and the firewall is what inspects the request itself. None of that substitutes for the fix: YITH WooCommerce Gift Cards 4.38.1 closes this, and updating the plugin is the step that ends it.
- Login Security
- Alerts
External References
Related records
Other vulnerabilities in YITH WooCommerce Gift Cards
- 7.1YITH plugins by YITHEMES <= (Various Versions) Missing Authorization
- 5.3CVE-2024-0870: YITH WooCommerce Gift Cards Unauthenticated
CVE-2024-0870 - 4.3CVE-2022-44630: YITH plugins by YITHEMES <= (Various Versions) CSRF
CVE-2022-44630 - 4.3CVE-2019-16251: YIT Plugin Framework <= 3.3.8 Settings Change
CVE-2019-16251
Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C