Customer Reviews for WooCommerce <= 5.103.0 — Unauthenticated Authentication Bypass to Arbitrary Review Submission via 'key' Parameter
CVE-2026-4664Published · Updated Action summary
Affected: ≤5.103.0Update to 5.104.0 or newer
All remediation steps- Severity
- Medium5.3
- CVSS
- 5.3CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:NWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:NPrivileges required- None
UI:NUser interaction- None
S:UScope- Unchanged
C:NConfidentiality- None
I:LIntegrity- Low
A:NAvailability- None
- Weakness
- CWE-287 Improper Authentication
- Required access
- No account needed
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
Customer Reviews for WooCommerce customer-reviews-woocommerce
- Affected≤ 5.103.0
- Patched in5.104.0
Update to 5.104.0 or newer.
You are affected if you run ≤ 5.103.0. Version 5.104.0 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Customer Reviews for WooCommerce.
- No admin access? Run a passive check of your site. It reads public files only.
- No account is needed to exploit this. Treat any exposed site on an affected version as at risk.
What to do
- Update to version 5.104.0, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Customer Reviews for WooCommerce to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to kai63001.
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"`.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in Customer Reviews for WooCommerce
All 31| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium5.3 | Unauthenticated Sensitive Information Exposure in 'search' Parameter ≤5.127.0Update to 5.128.0 | CVE-2026-121518 | |
| Medium6.4 | Authenticated (Contributor+) Stored Cross-Site Scripting via 'slides_to_show' Shortcode Attribute ≤5.126.0Update to 5.127.0 | CVE-2026-120553 | |
| High7.2 | Unauthenticated Stored Cross-Site Scripting via Comment Author Name ≤5.122.0Update to 5.123.0 | CVE-2026-97663 | |
| Critical9.1 | Missing Authorization to Unauthenticated Arbitrary Attachment Deletion via 'items[][media]' Parameter ≤5.120.0Update to 5.121.0 | CVE-2026-89055 | |
| Medium5.3 | Missing Authorization ≤5.120.0Update to 5.121.0 | CVE-2026-96823 |
- Medium5.3Unauthenticated Sensitive Information Exposure in 'search' Parameter
≤5.127.0Update to 5.128.0
- Medium6.4Authenticated (Contributor+) Stored Cross-Site Scripting via 'slides_to_show' Shortcode Attribute
≤5.126.0Update to 5.127.0
- High7.2Unauthenticated Stored Cross-Site Scripting via Comment Author Name
≤5.122.0Update to 5.123.0
- Critical9.1Missing Authorization to Unauthenticated Arbitrary Attachment Deletion via 'items[][media]' Parameter
≤5.120.0Update to 5.121.0
- Medium5.3Missing Authorization
≤5.120.0Update to 5.121.0
Timeline
CVE published
Severity medium, CVSS 5.3
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. [object Object] Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- [object Object]. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.