Unauthenticated Cross Site Scripting Vulnerability in Popup by Supsystic
CVE-2026-102398

7.1HIGH

Key Information:

Vendor

WordPress
Status
Popup By Supsystic
Vendor
CVE Published:
30 September 2026

What is CVE-2026-102398?

The Popup by Supsystic plugin for WordPress prior to version 1.13.1 is susceptible to an unauthenticated Cross Site Scripting (XSS) vulnerability. This flaw allows attackers to inject malicious scripts into web pages viewed by users, potentially compromising user data and site integrity. It is essential for users to update to the latest version to mitigate any exploitation risks associated with this vulnerability.

Affected Version(s)

Popup by Supsystic <= 1.13.1

References

https://patchstack.com/database/wordpress/plugin/popup-by...
vdb-entry

CVSS V3.1

Score:
7.1
Severity:
HIGH
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
Required
Scope:
Changed

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

neurotx | Patchstack Bug Bounty Program
.