EUVD-2026-21317
GHSA-r2fc-mm5p-v3mp
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
Lifecycle Timeline
5DescriptionCVE.org
The YITH WooCommerce Wishlist WordPress plugin before 4.13.0 does not properly validate wishlist ownership in the save_title() AJAX handler before allowing wishlist renaming operations. The function only checks for a valid nonce, which is publicly exposed in the page source of the /wishlist/ page, making it possible for unauthenticated attackers to rename any wishlist belonging to any user on the site.
AnalysisAI
Unauthenticated attackers can rename arbitrary wishlists on WordPress sites running YITH WooCommerce Wishlist before version 4.13.0 due to insufficient ownership validation in the save_title() AJAX handler. The vulnerability exploits a publicly exposed nonce in the wishlist page source, allowing attackers to modify wishlist names for any user without authentication. While the CVSS score of 6.5 reflects moderate integrity and confidentiality impact, the EPSS score of 0.02% (percentile 6%) and low real-world exploitation probability suggest this is a niche risk affecting only sites using this specific plugin, though publicly available exploit code exists.
Technical ContextAI
The YITH WooCommerce Wishlist plugin implements an AJAX handler for the save_title() function to allow users to rename their wishlists. The vulnerability stems from improper access control in this handler: while the function validates a WordPress nonce (CSRF token), it fails to verify that the requesting user actually owns the wishlist being modified. Nonces in WordPress are designed to prevent cross-site request forgery but are not access control mechanisms. The nonce value is embedded directly in the HTML source of the public /wishlist/ page, making it accessible to any visitor. Because the AJAX endpoint lacks user ID or ownership checks after nonce validation, any attacker with the nonce can rename any wishlist on the site. This represents a classic broken access control vulnerability (improper authorization check) affecting WordPress plugin functionality.
RemediationAI
Vendor-released patch: upgrade YITH WooCommerce Wishlist to version 4.13.0 or later. This patch version implements proper ownership validation in the save_title() AJAX handler, ensuring that users can only rename wishlists they own. Site administrators should update immediately through the WordPress plugin dashboard or manually via the plugin repository. No workaround exists for versions prior to 4.13.0 that fully mitigates the vulnerability without upgrading. Review WPScan vulnerability details at https://wpscan.com/vulnerability/2f052086-b691-48df-9b08-2cb1db65e14e/ for additional context and the NIST NVD entry at https://nvd.nist.gov/vuln/detail/CVE-2026-4432 for patch confirmation.
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