Classified Listing Mobile Number Verification
Monthly
Authentication bypass in the Classified Listing - Mobile Number Verification WordPress plugin (all versions through 1.6.0) allows unauthenticated network attackers to authenticate as any registered user - including site administrators - without a valid OTP. The root cause is the absence of server-side Firebase OTP token validation in the process_otp_login() function, which blindly trusts client-submitted OTP and UID values. No public exploit code has been identified at time of analysis, and it does not appear in the CISA KEV catalog, but the CVSS 8.1 score reflects the high impact of full account takeover if exploitation prerequisites are met.
Authentication bypass in the Classified Listing - Mobile Number Verification WordPress plugin (all versions through 1.6.0) allows unauthenticated network attackers to authenticate as any registered user - including site administrators - without a valid OTP. The root cause is the absence of server-side Firebase OTP token validation in the process_otp_login() function, which blindly trusts client-submitted OTP and UID values. No public exploit code has been identified at time of analysis, and it does not appear in the CISA KEV catalog, but the CVSS 8.1 score reflects the high impact of full account takeover if exploitation prerequisites are met.