CVE-2026-84306: Filament Multi-factor Authentication (app) Codes Can Vulnerability

MODERATE
Advisory Identifier: GHSA-r3j6-gpjw-qfjr
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CVSS 6.5
CWE-294
Published
Advisory Summary

CVE-2026-84306 is a MODERATE (CVSS 6.5) multi-factor authentication (app) codes can vulnerability (CWE-294: Authentication Bypass by Capture-replay) affecting Filament libraries in the Packagist ecosystem. The issue involves multi-factor authentication (app) codes can still be used after a newer code has been used. Remediation is available by upgrading affected packages to version 4.12.6, 5.7.6.

CVE-2026-84306 at a Glance

CVE Identifier CVE-2026-84306
GHSA Identifier GHSA-r3j6-gpjw-qfjr
Severity MODERATE
CVSS v3.1 Base Score 6.5
CWE Classification CWE-294: Authentication Bypass by Capture-replay
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:H/PR:N/UI:N/S:U/C:H/I:L/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 Low (I:L)
Availability None (A:N)

How to Fix CVE-2026-84306

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: 4.12.6 
Upgrade filament/filament to 4.12.6
filament/filament fixed: 5.7.6 
Upgrade filament/filament to 5.7.6
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-2026-84306, 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 4.12.6), 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-294: Authentication Bypass by Capture-replay, where a capture-replay flaw exists when the design of the product makes it possible for a malicious user to sniff network traffic and bypass authentication by replaying it to the server in question to the same effect as the original message (or with minor changes). 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 one-time codes for app-based multi-factor authentication allows a previously issued code to be used after a newer code has already been accepted. This issue does not affect email-based MFA. Submitting the exact same code twice was already prevented, but any other code within the accepted time window was not. If an attacker gains access to both the user's password and a single one-time code, that code stays usable for the remainder of its time window, which is around four minutes on the default settings, including after the legitimate user has already logged in with a newer code.

CVE-2026-84306 Affected Filament Versions

2 component(s)
Fixed Versions:
4.12.65.7.6
Product / Package Ecosystem Affected Versions Fixed Version
filament/filament
 Packagist
≥ 4.0.0
< 4.12.6
4.12.6
filament/filament
 Packagist
≥ 5.0.0
< 5.7.6
5.7.6

References

GitHub Advisory / Wiki ADVISORY
https://github.com/filamentphp/filament/security/advisories/GHSA-r3j6-gpjw-qfjr
Filament Source Repository REPOSITORY
https://github.com/filamentphp/filament/pull/20335
Security Fix Commit FIX COMMIT
https://github.com/filamentphp/filament/commit/b6bde8572bcac75d4f5b4ec892ba7b9e91e0ab4d
Filament Source Repository REPOSITORY
https://github.com/filamentphp/filament
Filament Release RELEASE
https://github.com/filamentphp/filament/releases/tag/v4.12.6
Filament Release RELEASE
https://github.com/filamentphp/filament/releases/tag/v5.7.6

Frequently Asked Questions

What is CVE-2026-84306?
CVE-2026-84306 is a security vulnerability in Filament involving Multi-factor authentication (app) codes can still be used after a newer code has been used under CWE-294: Authentication Bypass by Capture-replay.
Which Filament versions are affected?
Affected versions include releases prior to 4.12.6, 5.7.6 across affected packages: filament/filament.
What version fixes CVE-2026-84306?
Upgrading to 4.12.6, 5.7.6 (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 4.12.6, 5.7.6. Upgrade your dependency to 4.12.6, 5.7.6 or later.
What is the CVSS score of CVE-2026-84306?
CVE-2026-84306 has a CVSS v3.1 base score of 6.5 (MODERATE) with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N.
What CWE is associated with CVE-2026-84306?
CVE-2026-84306 is classified under CWE-294: Authentication Bypass by Capture-replay (A capture-replay flaw exists when the design of the product makes it possible for a malicious user to sniff network traffic and bypass authentication by replaying it to the server in question to the same effect as the original message (or with minor changes).).
How can I check Packagist dependencies for CVE-2026-84306?
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-r3j6-gpjw-qfjr",
  "modified" : "2026-09-01T21:29:43Z",
  "published" : "2026-09-01T21:29:43Z",
  "aliases" : [ "CVE-2026-84306" ],
  "summary" : "Filament: Multi-factor authentication (app) codes can still be used after a newer code has been used",
  "details" : "A flaw in the handling of one-time codes for app-based multi-factor authentication allows a previously issued code to be used after a newer code has already been accepted. This issue does not affect email-based MFA. Submitting the exact same code twice was already prevented, but any other code within the accepted time window was not.\n\nIf an attacker gains access to both the user's password and a single one-time code, that code stays usable for the remainder of its time window, which is around four minutes on the default settings, including after the legitimate user has already logged in with a newer code.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "filament/filament"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "4.0.0"
      }, {
        "fixed" : "4.12.6"
      } ]
    } ]
  }, {
    "package" : {
      "ecosystem" : "Packagist",
      "name" : "filament/filament"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "5.0.0"
      }, {
        "fixed" : "5.7.6"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/filamentphp/filament/security/advisories/GHSA-r3j6-gpjw-qfjr"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/filamentphp/filament/pull/20335"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/filamentphp/filament/commit/b6bde8572bcac75d4f5b4ec892ba7b9e91e0ab4d"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/filamentphp/filament"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/filamentphp/filament/releases/tag/v4.12.6"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/filamentphp/filament/releases/tag/v5.7.6"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-294" ],
    "severity" : "MODERATE",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-09-01T21:29:43Z",
    "nvd_published_at" : null
  }
}