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CVE-2026-84306— Filament: Multi-factor authentication (app) codes can still be used after a newer code has been used

Quick assessment

Affected
filamentphp filament
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Filament是Filament团队开源的一个用于加速 Laravel 开发的全栈组件的集合。 Filament 4.0.0至4.12.6之前版本和5.0.0至5.7.6之前版本存在授权问题漏洞，该漏洞源于AppAuthentication::verifyCode()方法使用由应用认证密钥和所提交的TOTP代码共同派生的已用代码缓存键，导致按代码而非按密钥隔离最新接受的时间步，可使先前发放的基于应用的多因素认证代码在新代码已被使用后仍被接受。攻击者获取目标账户密码和一个基于应用的多因素认证代码后，可在剩

CVSS 6.5 · Medium EPSS 0.45% · P39

Possible ATT&CK Techniques 1 AI

T1110 · Brute Force

Affected Version Matrix 2

VendorProduct Version RangeStatus
filamentphp filament >= 4.0.0, < 4.12.6 affected
>= 5.0.0, < 5.7.6 affected
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I. Basic Information for CVE-2026-84306

Vulnerability Information
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Vulnerability Title
Filament: Multi-factor authentication (app) codes can still be used after a newer code has been used
Source: CVE Program / CVE List V5
Vulnerability Description
Filament is a collection of full-stack components for accelerated Laravel development. From 4.0.0 until 4.12.6 and 5.7.6, packages/panels/src/Auth/MultiFactor/App/AppAuthentication.php uses AppAuthentication::verifyCode() with a used-code cache key derived from both the app authentication secret and the submitted TOTP code. This isolates the newest accepted timestep by code instead of by secret, allowing a previously issued app-based MFA code to be accepted after a newer code has already been used. Reuse of the exact same code was already prevented, but another code inside the accepted time window remained usable. An attacker who obtains the target account's password and one app-based MFA code can use that code for the remainder of the configured window, which is approximately four minutes with the default settings, even after the legitimate account holder logs in with a newer code. Email-based MFA is not affected. This issue is fixed in versions 4.12.6 and 5.7.6.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
使用捕获-重放进行的认证绕过
Source: CVE Program / CVE List V5
Vulnerability Title
Filament 授权问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Filament是Filament团队开源的一个用于加速 Laravel 开发的全栈组件的集合。 Filament 4.0.0至4.12.6之前版本和5.0.0至5.7.6之前版本存在授权问题漏洞，该漏洞源于AppAuthentication::verifyCode()方法使用由应用认证密钥和所提交的TOTP代码共同派生的已用代码缓存键，导致按代码而非按密钥隔离最新接受的时间步，可使先前发放的基于应用的多因素认证代码在新代码已被使用后仍被接受。攻击者获取目标账户密码和一个基于应用的多因素认证代码后，可在剩
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
filamentphp filament >= 4.0.0, < 4.12.6 -

II. Public POCs for CVE-2026-84306

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III. Intelligence Information for CVE-2026-84306

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Patches & Fixes for CVE-2026-84306 (2)

Vendor Advisories for CVE-2026-84306 (1)

Vendor Pages for CVE-2026-84306 (1)

IV. Related Vulnerabilities

Same product: filament
Same vendor: filamentphp
Same weakness: CWE-294