CVE-2026-4664 Details
Description
The Customer Reviews for WooCommerce plugin for WordPress is vulnerable to authentication bypass in all versions up to, and including, 5.103.0. This is due to the `create_review_permissions_check()` function comparing the user-supplied `key` parameter against the order's `ivole_secret_key` meta value using strict equality (`===`), without verifying that the stored key is non-empty. For orders where no review reminder email has been sent, the `ivole_secret_key` meta is not set, causing `get_meta()` to return an empty string. An attacker can supply `key: ""` to match this empty value and bypass the permission check. This makes it possible for unauthenticated attackers to submit, modify, and inject product reviews on any product — including products not associated with the referenced order — via the REST API endpoint `POST /ivole/v1/review`. Reviews are auto-approved by default since `ivole_enable_moderation` defaults to `"no"`.
A vulnerability exists in the Customer Reviews for WooCommerce plugin for WordPress, affecting all versions up to and including 5.103.0. The issue arises from the 'create_review_permissions_check()' function, which compares the user-supplied 'key' parameter to the order's 'ivole_secret_key' meta value using strict equality. This comparison fails to ensure that the stored key is non-empty. For orders that have not received a review reminder email, the 'ivole_secret_key' meta is unset, leading 'get_meta()' to return an empty string. Exploiting this, an attacker can send a 'key' parameter with an empty value to bypass the permission check. This vulnerability allows unauthenticated users to submit, modify, and inject product reviews through the REST API endpoint 'POST /ivole/v1/review'. By default, submitted reviews are auto-approved.
Users are advised to update the Customer Reviews for WooCommerce plugin to version 5.104.0 or later.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Apr 10, 2026CISA-ADP
Assessed Apr 10, 2026References to Advisories, Solutions, and Tools
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Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-287 | Improper Authentication | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| Ivole Customer Reviews for WooCommerce | <= 5.103.0 (semver) |
CPE
Remediation
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Change History
3 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 10, 2026 | New CVE Received | [email protected] |