CVE-2026-16030 MStore API < 4.21.0 - Unauthenticated Account Takeover via Firebase Phone Authentication
Unauthenticated attackers can forge tokens to take over user accounts, including administrators, in the MStore API WordPress plugin.
- 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-2026-16030?
CVE-2026-16030 is a high-severity authentication bypass vulnerability in Unknown MStore API, published on 7 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The MStore API WordPress plugin before 4.21.0 does not correctly verify the cryptographic signature of the token used to authenticate its phone-based login, allowing unauthenticated attackers who know a registered user's phone number to forge a token and take over that user's account, including administrator accounts.
Weakness: CWE-287
Which versions are affected by CVE-2026-16030?
How do I fix CVE-2026-16030?
No fix has been published for CVE-2026-16030 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-2026-16030 being exploited?
There is no known exploitation of CVE-2026-16030 in the wild and no public exploit code.
Sources
Also known as GHSA-w2g6-85hw-mgcv.