CVE-2026-8760
Login with OTP <= 1.6 - Unauthenticated Authentication Bypass via OTP Brute Force
- State
- Published
- Severity
- 9.8 Critical
- Published
- May 27, 2026
- Updated
- May 27, 2026
- Reserved
- May 16, 2026
Description
The Login with OTP plugin for WordPress is vulnerable to authentication bypass in all versions up to, and including, 1.6. This is due to an incomplete fix for CVE-2024-11178: the rate-limit/lockout check added to `otpl_login_action()` was placed only inside the OTP-generation branch and is never evaluated on the OTP-validation branch, and the generated 6-digit OTP additionally has no expiration. This makes it possible for unauthenticated attackers to brute-force the 900,000-value OTP space for any user account (including administrators) and obtain a valid `wp_set_auth_cookie()` session, leading to full site compromise.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 9.8 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H | Wordfence |
Weaknesses
- CWE-307 Improper Restriction of Excessive Authentication Attempts
Affected Products
| Product | Versions |
|---|---|
Login with OTPindia-web-developer |
|
References
- https://www.wordfence.com/threat-intel/vulnerabilities/id/ad22cb24-e6a0-456f-afe8-88a39acd97d3?source=cve
- https://plugins.trac.wordpress.org/browser/otp-login/tags/1.6/lib/otpl-class.php#L419
- https://plugins.trac.wordpress.org/browser/otp-login/trunk/lib/otpl-class.php#L419
- https://plugins.trac.wordpress.org/browser/otp-login/tags/1.6/lib/otpl-class.php#L424
- https://plugins.trac.wordpress.org/browser/otp-login/trunk/lib/otpl-class.php#L424
- https://plugins.trac.wordpress.org/browser/otp-login/tags/1.6/lib/otpl-class.php#L427
- https://plugins.trac.wordpress.org/browser/otp-login/trunk/lib/otpl-class.php#L427
- https://plugins.trac.wordpress.org/browser/otp-login/tags/1.6/lib/otpl-class.php#L361
- https://plugins.trac.wordpress.org/browser/otp-login/trunk/lib/otpl-class.php#L361
- https://nvd.nist.gov/vuln/detail/CVE-2024-11178
Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.