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9.3

Filament-Comments lets logged-in users run malicious script in comments

CVE-2026-90943 · published 28 days ago
Summary

The Filament-Comments component (up to version 3.0.0) allows people who are signed into the admin panel to place code in a comment’s text. When other users view that comment, the code runs in their browser, potentially stealing login information or performing actions on their behalf. Fix the issue by upgrading to the latest release or applying a patch that sanitizes comment content.

What to do

The CVE record does not list a fixed version. Check the vendor's site or the advisory links below - a fix may already be released.

Affected software
VendorProductAffected versions
parallax filament-comments <= 3.0.0
Original advisory text
parallax filament-comments through 3.0.0 Stored XSS via Comment Body
parallax filament-comments through 3.0.0 contains a stored cross-site scripting vulnerability in comment body rendering that allows authenticated panel users to inject malicious scripts. Attackers can store XSS payloads in comment bodies that execute in the browsers of other users viewing those comments, including administrators, enabling session token theft and unauthorized actions.
References
Fix within
Internet-facing 14 days
Internal At next upgrade
  • Not known to be exploited
  • Needs hands-on effort to exploit
  • Gives an attacker full control
Severity
9.3 Critical
Exploitation
<1% chance of attack within 30 days
Type
CWE-79Cross-site Scripting (XSS)
Timeline
Published14 Sep 2026
Updated11 Oct 2026
First seen14 Sep 2026
Sources
CVE-2026-90943 · NVD
CVE-2026-90943 · MITRE
CVE-2026-90943 · OSV
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