Sensitive Data Exposure in Themefic Instantio Plugin by WordPress
CVE-2026-39571

5.3MEDIUM

Key Information:

Vendor

WordPress
Status
Instantio
Vendor
CVE Published:
8 April 2026

What is CVE-2026-39571?

A vulnerability in the Themefic Instantio plugin allows unauthorized parties to retrieve embedded sensitive data. This issue impacts versions of Instantio up to 3.3.30, posing significant risks to user data confidentiality and integrity. Website administrators are advised to verify their plugin version and implement security measures to mitigate exposure.

Affected Version(s)

Instantio 0 <= 3.3.30

References

https://patchstack.com/database/Wordpress/Plugin/instanti...
vdb-entry

CVSS V3.1

Score:
5.3
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Que Thanh Tuan | Patchstack Bug Bounty Program
.