Unauthenticated Broken Authentication in Popup by Supsystic Plugin
CVE-2026-73381

9.1CRITICAL

Key Information:

Vendor

WordPress
Status
Popup By Supsystic
Vendor
CVE Published:
18 August 2026

What is CVE-2026-73381?

The Popup by Supsystic plugin versions up to 1.13.0 contains a vulnerability that allows unauthenticated users to exploit broken authentication mechanisms. This weakness can enable unauthorized access to sensitive areas of the application, potentially leading to further attacks or data breaches. Developers are encouraged to update to the latest version to mitigate this risk.

Affected Version(s)

Popup by Supsystic <= 1.13.0

References

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

CVSS V3.1

Score:
9.1
Severity:
CRITICAL
Confidentiality:
None
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Asim Alshaya | Patchstack Bug Bounty Program
.