CVE-2026-16259 Uix UserCenter <= 1.0.3 - Unauthenticated Privilege Escalation
Unauthenticated attackers can forge tokens to overwrite administrator credentials and take over accounts in the Uix UserCenter 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-2026-16259?
CVE-2026-16259 is a critical vulnerability in Unknown Uix UserCenter, published on 29 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Uix UserCenter WordPress plugin through 1.0.3 does not verify that the account being modified through an unauthenticated profile-update action belongs to the requester, and it authenticates that action with a token whose signing key is hardcoded and identical across every install, allowing unauthenticated attackers to forge a token for any user, overwrite an administrator's email and password, and take over the account.
Weakness: CWE-269
Which versions are affected by CVE-2026-16259?
How do I fix CVE-2026-16259?
No fix has been published for CVE-2026-16259 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-16259 being exploited?
There is no known exploitation of CVE-2026-16259 in the wild and no public exploit code.
Sources
Also known as GHSA-p38m-pp69-pr2w.