CVE-2026-39571 WordPress Instantio plugin <= 3.3.30 - Sensitive Data Exposure vulnerability
An attacker can retrieve embedded sensitive system information from the Instantio WordPress plugin, potentially exposing internal data.
- 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-2026-39571?
CVE-2026-39571 is a medium-severity vulnerability in Themefic Instantio, published on 8 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Exposure of Sensitive System Information to an Unauthorized Control Sphere vulnerability in Themefic Instantio instantio allows Retrieve Embedded Sensitive Data.This issue affects Instantio: from n/a through <= 3.3.30.
Weakness: CWE-497
Which versions are affected by CVE-2026-39571?
How do I fix CVE-2026-39571?
No fix has been published for CVE-2026-39571 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-39571 being exploited?
There is no known exploitation of CVE-2026-39571 in the wild and no public exploit code.
Sources
Also known as GHSA-45jv-8hvx-m25c.