CVE-2026-48500: Filament Unauthenticated Temporary File Upload On Vulnerability

MODERATE
Advisory Identifier: GHSA-44wp-g8f4-f4v5
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CVSS 6.5
CWE-862
Published
Advisory Summary

CVE-2026-48500 is a MODERATE (CVSS 6.5) unauthenticated temporary file upload on vulnerability (CWE-862: Missing Authorization) affecting Filament libraries in the Packagist ecosystem. The issue involves unauthenticated temporary file upload on auth pages. Remediation is available by upgrading affected packages to version 4.11.5, 5.6.5, 3.3.52.

CVE-2026-48500 at a Glance

CVE Identifier CVE-2026-48500
GHSA Identifier GHSA-44wp-g8f4-f4v5
Severity MODERATE
CVSS v3.1 Base Score 6.5
CWE Classification CWE-862: Missing Authorization
Affected Product Filament
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 6.5

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality None (C:N)
Integrity Low (I:L)
Availability Low (A:L)

How to Fix CVE-2026-48500

To remediate this vulnerability, upgrade all affected Filament dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

filament/filament fixed: 4.11.5 
Upgrade filament/filament to 4.11.5
filament/filament fixed: 5.6.5 
Upgrade filament/filament to 5.6.5
filament/filament fixed: 3.3.52 
Upgrade filament/filament to 3.3.52
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

inspect dependencies for filament/filament

How to Check if You Are Affected

To determine whether your application is affected by CVE-2026-48500, inspect your project dependencies for Filament:

inspect dependencies for filament/filament

Analyze the terminal output to locate any version of Filament in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 4.11.5), your application is affected.

Note: Verify declared build manifests and deployed runtime container environments.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-862: Missing Authorization, where the product does not perform an authorization check when an actor attempts to access a resource or perform an action. In Filament, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

Any schema can contain a file upload form field, so Filament applies Livewire's `WithFileUploads` trait to the Livewire component the schema is embedded in. However, some schemas, such as the panel login form, do not require file uploads, and exposing unauthenticated temporary file uploads on these components is not an acceptable risk. On these components, an unauthenticated attacker could upload arbitrary files to the application's temporary storage, which could be abused to exhaust disk space or inflate storage costs.

CVE-2026-48500 Affected Filament Versions

3 component(s)
Fixed Versions:
4.11.55.6.53.3.52
Product / Package Ecosystem Affected Versions Fixed Version
filament/filament
 Packagist
≥ 4.0.0
< 4.11.5
4.11.5
filament/filament
 Packagist
≥ 5.0.0
< 5.6.5
5.6.5
filament/filament
 Packagist
≥ 3.0.0
< 3.3.52
3.3.52

References

GitHub Advisory / Wiki ADVISORY
https://github.com/filamentphp/filament/security/advisories/GHSA-44wp-g8f4-f4v5
NVD — CVE-2026-48500 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-48500
Filament Source Repository REPOSITORY
https://github.com/filamentphp/filament

Frequently Asked Questions

What is CVE-2026-48500?
CVE-2026-48500 is a security vulnerability in Filament involving Unauthenticated temporary file upload on auth pages under CWE-862: Missing Authorization.
Which Filament versions are affected?
Affected versions include releases prior to 4.11.5, 5.6.5, 3.3.52 across affected packages: filament/filament.
What version fixes CVE-2026-48500?
Upgrading to 4.11.5, 5.6.5, 3.3.52 (or the latest patched release for your respective branch) resolves the vulnerability.
Is filament/filament affected?
Yes, filament/filament is affected in releases prior to 4.11.5, 5.6.5, 3.3.52. Upgrade your dependency to 4.11.5, 5.6.5, 3.3.52 or later.
What is the CVSS score of CVE-2026-48500?
CVE-2026-48500 has a CVSS v3.1 base score of 6.5 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L.
What CWE is associated with CVE-2026-48500?
CVE-2026-48500 is classified under CWE-862: Missing Authorization (The product does not perform an authorization check when an actor attempts to access a resource or perform an action.).
How can I check Packagist dependencies for CVE-2026-48500?
Run the dependency tree command: 'inspect dependencies for filament/filament'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-44wp-g8f4-f4v5",
  "modified" : "2026-06-23T22:16:58Z",
  "published" : "2026-06-23T22:16:58Z",
  "aliases" : [ "CVE-2026-48500" ],
  "summary" : "Filament: Unauthenticated temporary file upload on auth pages",
  "details" : "Any schema can contain a file upload form field, so Filament applies Livewire's `WithFileUploads` trait to the Livewire component the schema is embedded in. However, some schemas, such as the panel login form, do not require file uploads, and exposing unauthenticated temporary file uploads on these components is not an acceptable risk. On these components, an unauthenticated attacker could upload arbitrary files to the application's temporary storage, which could be abused to exhaust disk space or inflate storage costs.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:L"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "filament/filament"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "4.0.0"
      }, {
        "fixed" : "4.11.5"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 4.11.4"
    }
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "filament/filament"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "5.0.0"
      }, {
        "fixed" : "5.6.5"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 5.6.4"
    }
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "filament/filament"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "3.0.0"
      }, {
        "fixed" : "3.3.52"
      } ]
    } ],
    "database_specific" : {
      "last_known_affected_version_range" : "<= 3.3.51"
    }
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/filamentphp/filament/security/advisories/GHSA-44wp-g8f4-f4v5"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-48500"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/filamentphp/filament"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-862" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-06-23T22:16:58Z",
    "nvd_published_at" : "2026-06-22T22:16:47Z"
  }
}