Stored Cross-Site Scripting in Parallax Filament Comments Plugin
CVE-2026-90943

9.3CRITICAL

Key Information:

Vendor

Parallax

Status
Filament-comments
Vendor
CVE Published:
14 September 2026

What is CVE-2026-90943?

The Parallax Filament Comments plugin version 3.0.0 is vulnerable to stored cross-site scripting due to unescaped comment body rendering. Authenticated users with panel access can inject malicious scripts into comment bodies. When other users view these comments, including administrators, the injected scripts execute in their browsers. This can lead to significant security risks such as session token theft and unauthorized actions, compromising the integrity and confidentiality of user accounts.

Affected Version(s)

filament-comments 0 <= 3.0.0

References

https://hackindex.io/research/stored-xss-filament-comment...
third-party-advisorytechnical-description
https://github.com/parallax/filament-comments/blob/3.0.0/...
technical-description
https://github.com/parallax/filament-comments/blob/3.0.0/...
technical-description

CVSS V4

Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Joshua van der Poll
.