{"cve":"CVE-2026-104745","nvd":{"published":"2026-10-16T04:18:21.607","modified":"2026-10-16T15:17:03.563","status":"Deferred","description":"The Customer Email Verification for WooCommerce plugin for WordPress is vulnerable to Privilege Escalation via the `alg_wc_ev_verify_email` parameter in versions up to, and including, 3.3.0. The vulnerability exists because `alg_wc_ev_generate_user_code()` generates the per-user activation secret using `wp_rand(100)` when the plugin's 'Encoding method' is set to 'hashids', producing only ~101 possible values (~7 bits of entropy); the resulting token is a reversible Hashids encoding with no cryptographic MAC, and the unauthenticated `verify()` handler — hooked to `init` at `PHP_INT_MAX` with no nonce check and no rate limiting — accepts and acts on the attacker-controlled `?alg_wc_ev_verify_email=` GET parameter directly. This makes it possible for unauthenticated attackers to gain authentication as any unverified WordPress account, including administrator-level accounts, by brute-forcing the trivially small activation code space via a forged verification URL. Exploitation requires that the 'Encoding method' setting be changed to 'hashids' (non-default), that the attacker recover or brute-force the Hashids salt (which defaults to an `md5(time())` value set at first initialization), and that the target account's email address remain unverified.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","score":8.1},"cwes":["CWE-269"],"references":["https://plugins.trac.wordpress.org/browser/emails-verification-for-woocommerce/tags/3.3.0/includes/alg-wc-ev-functions.php#L331","https://plugins.trac.wordpress.org/browser/emails-verification-for-woocommerce/tags/3.3.0/includes/class-alg-wc-ev-core.php#L1258","https://plugins.trac.wordpress.org/browser/emails-verification-for-woocommerce/tags/3.3.0/includes/class-alg-wc-ev-core.php#L498","https://plugins.trac.wordpress.org/browser/emails-verification-for-woocommerce/tags/3.3.0/includes/class-alg-wc-ev-core.php#L784","https://plugins.trac.wordpress.org/changeset?reponame=&old=3744623%40emails-verification-for-woocommerce&new=3744623%40emails-verification-for-woocommerce"],"products":[],"source":"nvd","synced_at":"2026-10-19T23:00:53.604569364+00:00"},"epss":{"cve":"CVE-2026-104745","score":0.00684,"percentile":0.52299,"date":"2026-10-25"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}