CVE-2026-15985 Classified Listing - Mobile Number Verification <= 1.6.0 - Unauthenticated Authentication Bypass via Firebase OTP Login
Unauthenticated attackers can bypass authentication and take over accounts, including administrators, by submitting arbitrary OTP codes if Firebase login is enabled.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-15985?
CVE-2026-15985 is a high-severity authentication bypass vulnerability in RadiusTheme Classified Listing - Mobile Number Verification, published on 26 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Classified Listing - Mobile Number Verification plugin for WordPress is vulnerable to Authentication Bypass in all versions up to, and including, 1.6.0. This is due to missing server-side Firebase OTP validation in the process_otp_login() function. This makes it possible for unauthenticated attackers to authenticate as any user with a phone number registered in the plugin's phone table by submitting an arbitrary OTP code and UID through the Firebase OTP login flow. Successful exploitation requires OTP login to be enabled with Firebase selected as the verification gateway, and requires the attacker to know or guess the target account's registered phone number. Administrator account takeover is possible if an administrator account has a phone number registered in the plugin.
Weakness: CWE-289
Which versions are affected by CVE-2026-15985?
How do I fix CVE-2026-15985?
No fix has been published for CVE-2026-15985 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2026-15985 being exploited?
There is no known exploitation of CVE-2026-15985 in the wild and no public exploit code.
Sources
Also known as GHSA-xhwf-539m-8chw.