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Vulnerabilities

Vulnerability · CVE-2026-55409

Filament: Disabled RichEditor field state can be used for XSS

Published Jun 17, 2026 · catalog updated Nov 3, 2026 · Filament: Disabled RichEditor field

Last checked Nov 4, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2026-55409. EPSS is 0.35%. Act only if a listed version of Filament: Disabled RichEditor field is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Filament: Disabled RichEditor field).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High7.6
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.35%
Remediation
Advisory link
Affected products
Packagist filament/forms

In Filament v3, a disabled field rendered its raw state without sanitizing HTML. Where the data stored in this field's state isn't sanitized already when the form state was filled, an attacker could plant malicious HTML or JavaScript and achieve XSS that executes for users who view the form. Please note that Filament v4 and above does not use the same mechanism for rendering a disabled so this advisory does not apply.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • Packagist filament/forms3.0.0 → 3.3.53

How to fix CVE-2026-55409

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-55409. EPSS is 0.35%. Act only if a listed version of Filament: Disabled RichEditor field is installed.

Which versions are affected?

Compare what you have installed with 3.0.0 → 3.3.53. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-79: Cross-site Scripting (XSS). EPSS 0.35%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Jun 17, 2026 · GitHub Advisory Database

    Detected

    In Filament v3, a disabled field rendered its raw state without sanitizing HTML. Where the data stored in this field's state isn't sanitized already when the form state was filled, an attacker could plant malicious HTML or JavaScript and achieve XSS that executes for users who view the form. Please note that Filament v4 and above does not use the same mechanism for rendering a disabled so this adv

  2. Nov 3, 2026 · GitHub Advisory Database

    Fix available

    filament/forms fixed in 3.3.53

  3. Nov 3, 2026 · GitHub Advisory Database

    Fix available

    filament/forms fixed in 3.3.53

  4. Nov 3, 2026 · GitHub Advisory Database

    Updated

    In Filament v3, a disabled field rendered its raw state without sanitizing HTML. Where the data stored in this field's state isn't sanitized already when the form state was filled, an attacker could plant malicious HTML or JavaScript and achieve XSS that executes for users who view the form. Please note that Filament v4 and above does not use the same mechanism for rendering a disabled so this adv

Sources

References

Freshness

Last verified in this catalog Nov 4, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • CVE.orgNov 4, 2026
  • GitHub Advisory DatabaseNov 4, 2026
  • OpenSSF OSV / OSV ScannerNov 4, 2026