CVE-2026-1648 Performance Monitor <= 1.0.6 - Unauthenticated Server-Side Request Forgery via 'url' Parameter
Unauthenticated attackers can exploit SSRF in the Performance Monitor plugin to access internal services and potentially achieve remote code execution.
- 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-2026-1648?
CVE-2026-1648 is a high-severity server-side request forgery vulnerability in qrolic Performance Monitor, published on 21 Mar 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The Performance Monitor plugin for WordPress is vulnerable to Server-Side Request Forgery in all versions up to, and including, 1.0.6. This is due to insufficient validation of the 'url' parameter in the '/wp-json/performance-monitor/v1/curl_data' REST API endpoint. This makes it possible for unauthenticated attackers to make web requests to arbitrary locations, including internal services, via the Gopher protocol and other dangerous protocols. This can be exploited to achieve Remote Code Execution by chaining with services like Redis.
Weakness: CWE-918
Which versions are affected by CVE-2026-1648?
How do I fix CVE-2026-1648?
No fix has been published for CVE-2026-1648 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-2026-1648 being exploited?
There is no known exploitation of CVE-2026-1648 in the wild and no public exploit code.
Sources
Also known as GHSA-4vr9-8jj4-gfwv.