Improper authentication in ivole Customer Reviews for WooCommerce
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · Low · None
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-287.
Summary
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"`.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2026-4664
- 2026-10-03 Alias added: GHSA-jhv8-553j-r4x3
- 2026-10-25 EPSS moved to the 50th–90th percentile
References
Other 7
- https://www.wordfence.com/threat-intel/vulnerabilities/id/27e3dfe3-ad33-4d0c-a999-d0734df2f59b?source=cve
- https://plugins.trac.wordpress.org/browser/customer-reviews-woocommerce/tags/5.102.0/includes/reviews/class-cr-endpoint.php#L646
- https://plugins.trac.wordpress.org/browser/customer-reviews-woocommerce/tags/5.102.0/includes/reviews/class-cr-endpoint.php#L654
- https://plugins.trac.wordpress.org/browser/customer-reviews-woocommerce/tags/5.102.0/includes/reviews/class-cr-endpoint.php#L655
- https://plugins.trac.wordpress.org/browser/customer-reviews-woocommerce/tags/5.102.0/includes/emails/class-cr-email.php#L345
- https://wordpress.org/plugins/customer-reviews-woocommerce/
- https://plugins.trac.wordpress.org/changeset?old_path=%2Fcustomer-reviews-woocommerce/tags/5.103.0&new_path=%2Fcustomer-reviews-woocommerce/tags/5.104.0
More ivole vulnerabilities
- TI-2023-00076 Customer Reviews for WooCommerce < 5.16.0 - Contributor+ LFI CVSS 3.1HIGH 8.8
- TI-2023-00075 Customer Reviews for WooCommerce < 5.17.0 - Contributor+ Stored XSS CVSS 3.1MEDIUM 5.4
- TI-2023-06380 Customer Reviews for WooCommerce <= 5.38.9 - Authenticated (Author+) Arbitrary File Upload CVSS 3.1HIGH 8.8
- TI-2026-60355 Missing authorization in ivole Customer Reviews for WooCommerce CVSS 3.1CRITICAL 9.1
- TI-2022-19061 WordPress Customer Reviews for WooCommerce plugin <= 5.3.5 - Sensitive Information Disclosure vulnerability CVSS 3.1HIGH 7.5
- TI-2022-17838 WordPress Customer Reviews for WooCommerce plugin <= 5.3.5 - Authenticated Broken Access Control vulnerability CVSS 3.1HIGH 8.8
Sources
- CVE-2026-4664 · CVE Program
- CVE-2026-4664 · NVD
- FIRST EPSS
- GHSA-jhv8-553j-r4x3 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences