CVE-2026-15206 Auth bypass in SMS Alert
Unauthenticated attackers can bypass OTP verification to log in as any user, including administrators, by manipulating phone number inputs.
- 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-2026-15206?
CVE-2026-15206 is a high-severity authentication bypass vulnerability in Unknown SMS Alert, published on 2 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The SMS Alert WordPress plugin before 3.9.8 does not bind its "mobile verified" session flag to the phone number that was actually verified: after an attacker verifies an OTP sent to their own phone, the signup/login handler reads a fresh, attacker-supplied phone number to select the account and logs them in. An unauthenticated attacker can therefore log in as any user, including an administrator, who has a billing phone on file.
Weakness: CWE-287
Which versions are affected by CVE-2026-15206?
How do I fix CVE-2026-15206?
No fix has been published for CVE-2026-15206 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-2026-15206 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-15206 exists.
Sources
Also known as GHSA-63jw-46hv-gwp2.