CVE-2026-8760: CWE-307 Improper Restriction of Excessive Authentication Attempts in india-web-developer Login with OTP
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.
AI Analysis
Technical Summary
CVE-2026-8760 is a critical vulnerability in the india-web-developer Login with OTP WordPress plugin (<= 1.6). The issue stems from an incomplete fix for a previous vulnerability (CVE-2024-11178). Specifically, the rate-limiting and lockout mechanisms are only enforced during OTP generation but not during OTP validation. Additionally, the 6-digit OTP codes do not expire, allowing attackers to brute-force the 900,000 possible OTP values for any user account. Successful exploitation results in obtaining a valid wp_set_auth_cookie() session, enabling full site compromise.
Potential Impact
An attacker can bypass authentication by brute-forcing OTP codes due to missing rate-limiting on OTP validation and lack of OTP expiration. This allows unauthorized access to any user account, including administrators, leading to full compromise of the WordPress site. The vulnerability is rated critical with a CVSS score of 9.8, reflecting high impact on confidentiality, integrity, and availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, users should consider disabling the Login with OTP plugin or restricting access to the login functionality through other means to mitigate risk. Monitor vendor channels for updates and apply official patches once released.
CVE-2026-8760: CWE-307 Improper Restriction of Excessive Authentication Attempts in india-web-developer Login with OTP
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.
CVSS v3.1
Score 9.8critical
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-8760 is a critical vulnerability in the india-web-developer Login with OTP WordPress plugin (<= 1.6). The issue stems from an incomplete fix for a previous vulnerability (CVE-2024-11178). Specifically, the rate-limiting and lockout mechanisms are only enforced during OTP generation but not during OTP validation. Additionally, the 6-digit OTP codes do not expire, allowing attackers to brute-force the 900,000 possible OTP values for any user account. Successful exploitation results in obtaining a valid wp_set_auth_cookie() session, enabling full site compromise.
Potential Impact
An attacker can bypass authentication by brute-forcing OTP codes due to missing rate-limiting on OTP validation and lack of OTP expiration. This allows unauthorized access to any user account, including administrators, leading to full compromise of the WordPress site. The vulnerability is rated critical with a CVSS score of 9.8, reflecting high impact on confidentiality, integrity, and availability.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is available, users should consider disabling the Login with OTP plugin or restricting access to the login functionality through other means to mitigate risk. Monitor vendor channels for updates and apply official patches once released.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- Wordfence
- Date Reserved
- 2026-05-16T18:34:47.484Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a169061e29bf47b509e16c2
Added to database: 5/27/2026, 6:34:09 AM
Last enriched: 5/27/2026, 6:48:38 AM
Last updated: 5/28/2026, 4:26:01 AM
Views: 17
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