WooCommerce - Social Login WordPress Plugin Vulnerable to Authentication Bypass
The WooCommerce - Social Login plugin for WordPress is reportedly vulnerable to Authentication Bypass in all versions up to and including 2.8.7. This vulnerability appears to allow unauthenticated attackers to log in as any existing WordPress user by supplying a forged id_token.
What happened
The WooCommerce - Social Login plugin for WordPress is under investigation for a critical vulnerability (CVE-2026-8457) that could allow Authentication Bypass. This vulnerability is present in all versions up to and including 2.8.7. The issue arises from the plugin's Apple login handler, which accepts the Apple id_token and decodes only its base64 payload without verifying the JWT signature against Apple's public keys or validating the issuer, audience, or expiry claims. Additionally, the security nonce required to invoke the login flow is publicly exposed to unauthenticated users via a localized JavaScript object on the login page. This combination allows unauthenticated attackers to log in as any existing WordPress user, including administrators, by supplying a forged id_token whose payload contains the target user's email address.
To assess your exposure, check if your WordPress site is using the WooCommerce - Social Login plugin version 2.8.7 or earlier. If so, it is recommended to monitor for updates from the plugin developers and apply any patches as soon as they become available. For more detailed information, consult the primary sources provided.
How 0Day mitigates this
woocommerce-social-login is anywhere in your dependency tree, the engineers who own the affected repositories get a push alert the moment it is flagged — no manual audit to remember to run.Read how this differs from waiting on a scanner to catch a known advisory, or see the exact, read-only access 0Day needs to do this for an organization.