CVE-2026-90943 parallax filament-comments through 3.0.0 Stored XSS via Comment Body
Authenticated users can inject malicious scripts into comment bodies, leading to session theft and unauthorized actions for other users, including administrators.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-90943?
CVE-2026-90943 is a critical cross-site scripting vulnerability in parallax filament-comments, published on 14 Sep 2026. Any signed-in user can exploit it over the network, and only if a user opens a file or follows a link.
Official description
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.
Weakness: CWE-79
Which versions are affected by CVE-2026-90943?
How do I fix CVE-2026-90943?
No fix has been published for CVE-2026-90943 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2026-90943 being exploited?
There is no known exploitation of CVE-2026-90943 in the wild and no public exploit code.
Sources
Also known as GHSA-rrqh-mgcv-xmpw.