CVE-2026-97657
CriticalCVSS 9.8Summary
The Abandoned Cart Pro plugin for WooCommerce up to version 10.8.0 is vulnerable to authentication bypass via malleable encryption and bypassable HMAC. This is due to the use of MAC-free AES-CTR encryption for cart-recovery link tokens and a conditional HMAC check that can be bypassed by omitting the wcap_nonce parameter. This allows unauthenticated attackers with a single legitimate link to forge ciphertext and take over any user's account, including administrators.
Risk Assessment
An attacker can take over any user's account, including administrators, leading to full site compromise.
Recommendation
Update the Abandoned Cart Pro plugin to the latest patched version. Disable the auto-login feature if possible and monitor for suspicious activity.
Other vulnerabilities in Abandoned Cart Pro for WooCommerce
See all- CVE-2026-102251High
The Abandoned Cart Pro for WooCommerce plugin for WordPress in versions up to and including 10.8.0 is vulnerable to generic SQL Injection via the 'validate' parameter. Due to insufficient escaping of a user-supplied parameter and lack of sufficient preparation on the existing SQL query, an unauthenticated attacker can append additional SQL queries to existing ones to extract sensitive information from the database. AES-CTR is a malleable stream cipher, so an attacker who obtains one legitimate token by abandoning a cart with an email address they control can recover the keystream and forge a ciphertext carrying arbitrary SQL. The HMAC check added in 10.4.1 is enforced only when the wcap_nonce parameter is present, so omitting the parameter skips it entirely.
- CVE-2026-97668Critical
The Abandoned Cart Pro plugin for WooCommerce up to version 10.8.0 is vulnerable to SQL injection via the guest cart persistent meta_value. This is due to insufficient escaping and lack of prepared statements in the update_guest_persistent_cart() function. The abandoned_cart_info value is concatenated directly into an UPDATE statement, allowing unauthenticated attackers to append additional SQL, potentially leading to data extraction and privilege escalation.
- CVE-2026-66682Critical
Unauthenticated privilege escalation vulnerability in the Abandoned Cart Pro for WooCommerce plugin. Affects versions up to 10.4.0.
- CVE-2026-81543High
The Abandoned Cart Pro for WooCommerce plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 10.7.1. This is due to missing capability checks and nonce verification on multiple AJAX actions including wcap_save_connector_settings, wcap_send_manual_email, wcap_abandoned_cart_info, and wcap_change_manual_email_data. This makes it possible for authenticated attackers, with subscriber-level access and above, to modify SMTP connector settings to route administrator recovery emails through an attacker-controlled server and intercept auto-login links to gain full administrative access. The plugin's auto-login feature must be enabled, which is the default configuration.
- CVE-2026-56010High
The vulnerability in the Abandoned Cart Pro plugin for WooCommerce version 10.4.0 and below allows subscribers to escalate privileges. An attacker can exploit this flaw to gain unauthorized access to administrative functions.
Original NVD description (English source)
The Abandoned Cart Pro for WooCommerce plugin for WordPress is vulnerable to Authentication Bypass via Malleable Encryption and Bypassable HMAC in all versions up to, and including, 10.8.0. This is due to the use of MAC-free AES-CTR encryption for cart-recovery link tokens — where the 8-byte CTR nonce is carried inside the ciphertext blob and the encryption key is looked up using the attacker-supplied `user_email` GET parameter — combined with an HMAC nonce check in `wcap_email_track_links()` that is only enforced when the `wcap_nonce` parameter is non-empty, allowing complete bypass by omission, and an insecure direct object reference on the decrypted `abandoned_id` with no ownership verification confirming the cart belongs to the email used for decryption. This makes it possible for unauthenticated attackers who possess a single legitimate cart-recovery link (obtained from their own reminder email) to recover the keystream, forge a ciphertext that decrypts to any victim's cart ID, and trigger a call to `wp_set_auth_cookie()` for the victim user — achieving full account takeover of any user who has ever abandoned a cart, including administrators. The auto-login feature defaults to enabled and is forced on during plugin upgrades, meaning all affected installations are exploitable without any additional configuration.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS