Unauthenticated Cross Site Scripting Vulnerability in Flatastic Theme by WordPress
CVE-2026-66673

7.1HIGH

Key Information:

Vendor

WordPress
Status
Flatastic
Vendor
CVE Published:
20 August 2026

What is CVE-2026-66673?

The Flatastic theme for WordPress contains an unauthenticated cross site scripting (XSS) vulnerability affecting versions 2.0 and below. This flaw allows attackers to inject malicious scripts into web pages viewed by users, which can compromise user data and undermine website integrity. It is crucial for users of the Flatastic theme to apply necessary security measures to safeguard against potential exploitation.

Affected Version(s)

Flatastic <= 2.0

References

https://patchstack.com/database/wordpress/theme/flatastic...
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

João Pedro S Alcântara (Kinorth) | Patchstack Bug Bounty Program
.