CVE-2026-48505: Filament Multi-factor Authentication (app) Recovery Codes Vulnerability

HIGH
Advisory Identifier: GHSA-mc5j-f6wx-h9qh
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CVSS 7.4
CWE-841 CWE-362
Published
Advisory Summary

CVE-2026-48505 is a HIGH (CVSS 7.4) multi-factor authentication (app) recovery codes vulnerability (CWE-841: Improper Enforcement of Behavioral Workflow) affecting Filament libraries in the Packagist ecosystem. The issue involves multi-factor authentication (app) recovery codes can still be used multiple times via concurrent submission. Remediation is available by upgrading affected packages to version 4.11.5, 5.6.5.

CVE-2026-48505 at a Glance

CVE Identifier CVE-2026-48505
GHSA Identifier GHSA-mc5j-f6wx-h9qh
Severity HIGH
CVSS v3.1 Base Score 7.4
CWE Classification CWE-841: Improper Enforcement of Behavioral Workflow
Affected Product Filament
Package Ecosystem Packagist
Published Date
Last Updated

Security Impact

CVSS: 7.4

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

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

How to Fix CVE-2026-48505

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
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-2026-48505, 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-841: Improper Enforcement of Behavioral Workflow, where the product supports a session in which more than one behavior must be performed by an actor, but it does not properly ensure that the actor performs the behaviors in the required sequence. 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

A flaw in the handling of recovery codes for **app-based multi-factor authentication** allows the same recovery code to be reused via concurrent submission. This issue does **not** affect email-based MFA. It also only applies when recovery codes are enabled. If an attacker gains access to both the user's password and their recovery codes, they get two authenticated sessions per recovery code burned instead of one, or more if they batch the parallel submissions wider, materially extending the attacker's window of access compared to what the single-use guarantee implies.

CVE-2026-48505 Affected Filament Versions

2 component(s)
Fixed Versions:
4.11.55.6.5
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

References

GitHub Advisory / Wiki ADVISORY
https://github.com/filamentphp/filament/security/advisories/GHSA-mc5j-f6wx-h9qh
NVD — CVE-2026-48505 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-48505
Filament Source Repository REPOSITORY
https://github.com/filamentphp/filament

Frequently Asked Questions

What is CVE-2026-48505?
CVE-2026-48505 is a security vulnerability in Filament involving Multi-factor authentication (app) recovery codes can still be used multiple times via concurrent submission under CWE-841: Improper Enforcement of Behavioral Workflow.
Which Filament versions are affected?
Affected versions include releases prior to 4.11.5, 5.6.5 across affected packages: filament/filament.
What version fixes CVE-2026-48505?
Upgrading to 4.11.5, 5.6.5 (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. Upgrade your dependency to 4.11.5, 5.6.5 or later.
What is the CVSS score of CVE-2026-48505?
CVE-2026-48505 has a CVSS v3.1 base score of 7.4 (HIGH) with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N.
What CWE is associated with CVE-2026-48505?
CVE-2026-48505 is classified under CWE-841: Improper Enforcement of Behavioral Workflow (The product supports a session in which more than one behavior must be performed by an actor, but it does not properly ensure that the actor performs the behaviors in the required sequence.).
How can I check Packagist dependencies for CVE-2026-48505?
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-mc5j-f6wx-h9qh",
  "modified" : "2026-06-25T18:45:46Z",
  "published" : "2026-06-25T18:45:45Z",
  "aliases" : [ "CVE-2026-48505" ],
  "summary" : "Filament: Multi-factor authentication (app) recovery codes can still be used multiple times via concurrent submission",
  "details" : "A flaw in the handling of recovery codes for **app-based multi-factor authentication** allows the same recovery code to be reused via concurrent submission. This issue does **not** affect email-based MFA. It also only applies when recovery codes are enabled.\n\nIf an attacker gains access to both the user's password and their recovery codes, they get two authenticated sessions per recovery code burned instead of one, or more if they batch the parallel submissions wider, materially extending the attacker's window of access compared to what the single-use guarantee implies.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "filament/filament"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "4.0.0"
      }, {
        "fixed" : "4.11.5"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "filament/filament"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "5.0.0"
      }, {
        "fixed" : "5.6.5"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/filamentphp/filament/security/advisories/GHSA-mc5j-f6wx-h9qh"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-48505"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/filamentphp/filament"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-362", "CWE-841" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-06-25T18:45:45Z",
    "nvd_published_at" : "2026-06-22T22:16:47Z"
  }
}