{"id":"CVE-2026-4664","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-4664","generatedAt":"2026-10-28T01:10:56.594Z","title":"The Customer Reviews for WooCommerce plugin for WordPress is vulnerable to authentication bypass in all versions up to, and including, 5.103.0.","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\"`.","published":"2026-04-10T02:16:04.000Z","lastModified":"2026-06-17T10:57:00.000Z","status":"Deferred","sourceIdentifier":"security@wordfence.com","cvss":{"version":"3.1","score":5.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"},"cwe":["CWE-287"],"affected":[],"epss":{"score":0.00673,"percentile":0.51859,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.67%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://plugins.trac.wordpress.org/browser/customer-reviews-woocommerce/tags/5.102.0/includes/emails/class-cr-email.php#L345","source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/customer-reviews-woocommerce/tags/5.102.0/includes/reviews/class-cr-endpoint.php#L646","source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/customer-reviews-woocommerce/tags/5.102.0/includes/reviews/class-cr-endpoint.php#L654","source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/browser/customer-reviews-woocommerce/tags/5.102.0/includes/reviews/class-cr-endpoint.php#L655","source":"security@wordfence.com"},{"url":"https://plugins.trac.wordpress.org/changeset?old_path=%2Fcustomer-reviews-woocommerce/tags/5.103.0&new_path=%2Fcustomer-reviews-woocommerce/tags/5.104.0","source":"security@wordfence.com"},{"url":"https://wordpress.org/plugins/customer-reviews-woocommerce/","source":"security@wordfence.com"},{"url":"https://www.wordfence.com/threat-intel/vulnerabilities/id/27e3dfe3-ad33-4d0c-a999-d0734df2f59b?source=cve","source":"security@wordfence.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-4664","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}