Medium severity · published Apr 8, 2026
CVE-2026-39571
WordPress Instantio plugin <= 3.3.30 - Sensitive Data Exposure vulnerability
5.3
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 15% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
IN
Instantio · Themefic
through 3.3.30 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-39571
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-39571
patchstack.com
https://patchstack.com/database/Wordpress/Plugin/instantio/vulnerability/wordpress-instantio-plugin-3-3-30-sensitive-data-exposure-vulnerability?_s_id=cve
More from Instantio
7.2
CVE-2025-47550
WordPress Instantio plugin <= 3.3.16 - Arbitrary File Upload Vulnerability
6.5
CVE-2025-24581
WordPress Instantio plugin <= 3.3.7 - Settings Change vulnerability