PT-2026-51675 · Pravel · Signup & Signin
Alyudin Nafiie
·
Published
2026-06-24
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Updated
2026-06-24
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CVE-2026-12417
CVSS v3.1
9.8
Critical
| Vector | AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
The SignUp & SignIn plugin for WordPress is vulnerable to Authentication Bypass via Weak Password Reset Validation leading to Account Takeover in versions up to, and including, 1.0.0. This is due to the
pravel change password() AJAX handler — registered via wp ajax nopriv pravel change password and therefore accessible to unauthenticated users — performing no nonce verification, no capability check, and only a loose equality check between an attacker-supplied reset activation code POST parameter and the target user's forgot email user meta value; when a user has never initiated a password reset, get user meta() returns an empty string that trivially satisfies this check against an omitted or empty attacker-supplied code. This makes it possible for unauthenticated attackers to change the password of any WordPress user, including administrators, by sending a crafted POST request to admin-ajax.php with action=pravel change password, reset user id set to the target account's user ID, and new password custom set to an attacker-chosen password. Successful exploitation allows the attacker to authenticate with the newly set password and fully take over the targeted account, achieving administrator-level privilege escalation on the affected site.Fix
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Weakness Enumeration
Related Identifiers
Affected Products
Signup & Signin