Unauthenticated Data Exposure in Custom CSS and JavaScript Plugin by WordPress
CVE-2026-66683

5.3MEDIUM

Key Information:

Vendor

WordPress
Status
Custom Css And Javascript
Vendor
CVE Published:
6 August 2026

What is CVE-2026-66683?

A vulnerability exists in the Custom CSS and JavaScript Plugin for WordPress versions up to 2.0.16, which allows unauthenticated users to access sensitive data. This flaw can expose configuration files and other critical information, potentially leading to further security breaches. It is important for users to update their plugins to mitigate risks associated with this vulnerability.

Affected Version(s)

Custom CSS and JavaScript <= 2.0.16

References

https://patchstack.com/database/wordpress/plugin/custom-c...
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

Ananda Dhakal (Patchstack) | Patchstack Bug Bounty Program
.