CVE-2026-3881 Performance Monitor <= 1.0.6 - Unauthenticated Blind SSRF
Unauthenticated attackers can perform Server-Side Request Forgery attacks via an unvalidated parameter in the Performance Monitor 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-2026-3881?
CVE-2026-3881 is a medium-severity server-side request forgery vulnerability in Unknown Performance Monitor, published on 31 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Performance Monitor WordPress plugin through 1.0.6 does not validate a parameter before making a request to it, which could allow unauthenticated users to perform SSRF attacks
Weakness: CWE-918
Which versions are affected by CVE-2026-3881?
How do I fix CVE-2026-3881?
No fix has been published for CVE-2026-3881 yet. Limit exposure of the affected software until one is available.
Upgrade, and send outbound requests through an allow-list that blocks internal addresses. More about Server-side request forgery.
Is CVE-2026-3881 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-3881 exists.
Sources
Also known as GHSA-mxf6-4cfw-jjw8.