High severity · published Oct 31, 2026
CVE-2026-103898
Wp Social Login and Register Social Counter <= 3.2.2 - Unauthenticated Authentication Bypass via Insufficient Email Verification in Social Login Callback
New
8.1
CVSS
0.4%
EPSS
No
On KEV
Description
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.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 38% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
WS
Wp Social Login and Register Social Counter · roxnor
through 3.2.2 · source: vendor
Affected product
WS
Wp Social Login and Register Social Counter
roxnor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-103898
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-103898
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/wp-social/tags/3.2.1/inc/admin-create-user.php#L172
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/wp-social/tags/3.2.1/inc/admin-create-user.php#L229
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/wp-social/tags/3.2.1/inc/admin-create-user.php#L512
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/wp-social/tags/3.2.1/inc/admin-rest-api.php#L46
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/wp-social/tags/3.2.1/lib/composer/vendor/hybridauth/hybridauth/src/Provider/Facebook.php#L205
plugins.trac.wordpress.org
https://plugins.trac.wordpress.org/browser/wp-social/tags/3.2.1/lib/composer/vendor/hybridauth/hybridauth/src/Provider/Twitter.php#L102
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