CVE-2026-90943: XSS (CVSS 8.7)

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.

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CVSS v3.1 Score

8.7

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N

EPSS — Exploit Prediction

0.0024

Probability of exploitation

0.15%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

References

Other References

https://github.com/parallax/filament-comments/blob/3.0.0/resources/views/comments.blade.php https://github.com/parallax/filament-comments/blob/3.0.0/src/Policies/FilamentCommentPolicy.php https://hackindex.io/research/stored-xss-filament-comments-unescaped-rendering https://packagist.org/packages/parallax/filament-comments https://www.vulncheck.com/advisories/parallax-filament-comments-through-3.0.0-stored-xss-via-comment-body

Frequently Asked Questions

What is CVE-2026-90943? +

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. It has a CVSS v3.1 base score of 8.7 (HIGH).

How severe is CVE-2026-90943? +

CVE-2026-90943 has a CVSS v3.1 score of 8.7 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0024, placing it in the 0th percentile for exploitation probability.

How do I check if I'm vulnerable to CVE-2026-90943? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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