CVE-2026-15210 Login/Signup with Phone Number, OTP Verification < 1.8.71 - Unauthenticated Account Takeover via OTP Brute Force
Unauthenticated attackers can brute-force OTP codes to take over any user account, including administrators, due to missing rate limits and code invalidation.
- 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-2026-15210?
CVE-2026-15210 is a critical authentication bypass vulnerability in Unknown OTP Login With Phone Number, OTP Verification, published on 5 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The OTP Login With Phone Number, OTP Verification WordPress plugin before 1.8.71 does not limit the number of OTP verification attempts or invalidate a one-time login code after a wrong guess, and an unauthenticated user can request a login code for any account. Because the code is a short numeric OTP, an attacker can brute-force it and take over any account, including an administrator's.
Weakness: CWE-287
Which versions are affected by CVE-2026-15210?
How do I fix CVE-2026-15210?
No fix has been published for CVE-2026-15210 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-2026-15210 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-15210 exists.
Sources
Also known as GHSA-gfjg-jw2h-6xcq.