CVE-2026-103898
HighCVSS 8.1Exploitation Probability (EPSS)
Low risk38th percentile - higher than 38% of all known CVEs
Summary
The Wp Social Login and Register Social Counter plugin for WordPress (up to 3.2.2) is vulnerable to Authentication Bypass. The social login REST callback locates an account by the email returned from the OAuth provider and sets an authentication cookie without a password check, while the only verification guard is a no-op for bundled Facebook and Twitter adapters. This allows unauthenticated attackers to obtain a session as any user, including Administrators, if they control an OAuth account with a matching email.
Risk Assessment
An attacker can take over an administrator or other user account if they know the email address and can create an OAuth account with the same email at the provider. This leads to full site compromise.
Recommendation
Update the plugin to a version later than 3.2.2. Until then, consider disabling social login or limiting trust in OAuth providers.
Other vulnerabilities in Wp Social Login and Register Social Counter
See all- CVE-2026-97344Medium
The Wp Social Login and Register Social Counter plugin for WordPress in versions up to and including 3.2.1 is vulnerable to Stored Cross-Site Scripting via Avatar Alt Attribute and Arbitrary User Meta Write due to insufficient input sanitization and output escaping. The attacker must chain two steps: invoking the nonce-only dismiss_ajax_call endpoint to set the xs_social_profile_image meta flag, then setting their display name to a script payload.
- CVE-2025-13620Medium
The Wp Social Login and Register Social Counter plugin for WordPress is vulnerable to missing authorization in versions up to, and including, 3.1.3. This is due to the REST routes wslu/v1/check_cache/{type}, wslu/v1/save_cache/{type}, and wslu/v1/settings/clear_counter_cache being registered with permission_callback set to __return_true and lacking capability or nonce validation in their handlers. This makes it possible for unauthenticated attackers to clear or overwrite the social counter cache via crafted REST requests.
Original NVD description (English source)
The Wp Social Login and Register Social Counter plugin for WordPress is vulnerable to Authentication Bypass in all versions up to, and including, 3.2.2. This is due to the social login REST callback registered at `/wp-json/wslu-social-login/type/{provider}/` with `permission_callback => __return_true` locating an existing WordPress account solely by the email string returned from the OAuth provider and calling `wp_set_auth_cookie()` without a password check, while the only verification guard — `!empty($getProfile->emailVerified)` in `inc/admin-create-user.php` — is a no-op for the bundled Hybridauth Facebook and Twitter adapters, both of which assign the raw email string rather than a boolean verified flag to `emailVerified`. This makes it possible for unauthenticated attackers to obtain a fully authenticated session as any existing WordPress user, including Administrators, whose registered email address can be presented through a configured Facebook or Twitter login on the target site. Exploitation requires only that the attacker control an OAuth account whose provider-returned email matches the target account's registered WordPress email address; no local credentials, nonce, or prior foothold is needed.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS