Is CVE-2026-55409 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-55409 being exploited in the wild.

How severe is CVE-2026-55409?

High severity, with a CVSS score of 7.6, published 22 June 2026.

Which products and versions are affected?

filament/forms (Packagist) >= 3.0.0, <= 3.3.52, ECOSYSTEM:introduced=3.0.0,fixed=3.3.53.

Is there a fix for CVE-2026-55409?

Yes. filament/forms (Packagist): upgrade to 3.3.53 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-55409 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-55409?

Check whether you run filament/forms (Packagist) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-55409: Filament RichEditor stored XSS in disabled fields

Q: Is there a fix for CVE-2026-55409?

Yes. filament/forms (Packagist): upgrade to 3.3.53 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

Q: How is CVE-2026-55409 attacked?

It is attacked over the network, in a software library.

Q: Am I affected by CVE-2026-55409?

Check whether you run filament/forms (Packagist) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-55409 · Severity: high · CVSS 7.6 · Published 2026-06-22

Filament is a popular set of components used to build administrative interfaces for Laravel web applications. A security flaw in the RichEditor component allowed malicious code to be executed in the browser of users viewing certain forms. This could lead to unauthorized access to user sessions or sensitive data if an attacker manages to save malicious content into a field that is later displayed in a disabled state.

Vendors: Packagist.

Quick answers

Is CVE-2026-55409 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-55409 being exploited in the wild.
How severe is CVE-2026-55409?: High severity, with a CVSS score of 7.6, published 22 June 2026.
Which products and versions are affected?: filament/forms (Packagist) >= 3.0.0, <= 3.3.52, ECOSYSTEM:introduced=3.0.0,fixed=3.3.53.
Is there a fix for CVE-2026-55409?: Yes. filament/forms (Packagist): upgrade to 3.3.53 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-55409 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-55409?: Check whether you run filament/forms (Packagist) at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

filament/forms (Packagist): upgrade to 3.3.53 or later
```
composer require filament/forms:^3.3.53
```

Technical details

A stored cross-site scripting (XSS) vulnerability exists in Filament v3's RichEditor component. When the field is set to a 'disabled' state, it renders the raw underlying state without performing HTML sanitization. If an attacker can populate the field's state with malicious HTML or JavaScript (e.g., through a separate input vector or direct database manipulation), the payload will execute in the context of any user viewing the form. This issue is specific to the v3 branch and is addressed in version 3.3.53; Filament v4 is not affected due to a different rendering mechanism.

Affected products

filamentphp filament/forms >= 3.0.0, < 3.3.53

Identifiers

CVE-2026-55409
GHSA-m9cv-24rx-8mv7

Timeline

2026-06-17: advisory: GitHub security advisory published by maintainers
2026-06-22: disclosed: CVE published to NVD
2026-06-22: patched: Fix released in version 3.3.53

References

https://github.com/filamentphp/filament/security/advisories/GHSA-m9cv-24rx-8mv7

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