CVE-2026-104181 in Filament
Summary
by MITRE • 10/02/2026
Filament is a collection of full-stack components for accelerated Laravel development. From 4.0.0 until 4.13.3 and 5.8.3, app-based multi-factor authentication management actions do not consistently require confirmation of the current password. An attacker with access to an authenticated user session can set up app-based MFA and obtain recovery codes, or disable app-based MFA and regenerate recovery codes by supplying an existing app code or recovery code, without knowing the account password. Email-based MFA is not affected, and the issue does not independently permit an unauthenticated sign-in, but changing the app-MFA configuration may lock the legitimate user out. This issue is fixed in versions 4.13.3 and 5.8.3.
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Analysis
by VulDB Data Team • 10/02/2026
The vulnerability identified within Filament framework versions ranging from 4.0.0 through 4.13.3, as well as version 5.8.3, represents a critical flaw in the implementation of multi-factor authentication management logic. Specifically, this issue pertains to app-based multi-factor authentication configurations where the system fails to consistently require confirmation of the user's current password before executing sensitive actions. In a secure authentication architecture, any modification to security-critical settings such as enabling or disabling two-factor authentication methods must be preceded by strong proof of identity, typically in the form of re-entering the primary account password. The absence of this requirement creates a significant gap in access control mechanisms, allowing an attacker who has obtained valid session credentials to alter MFA configurations without possessing the actual user password.
From a technical perspective, the flaw lies in the validation logic governing app-based multi-factor authentication management endpoints. When a user attempts to set up application-based MFA and retrieve recovery codes, or conversely disable this feature and regenerate those codes, the system accepts alternative forms of verification such as an existing valid TOTP code from the authenticator app or a previously issued recovery code. While these tokens serve as proof that the session is active and potentially linked to the user's device, they do not constitute sufficient evidence for changing high-privilege security settings. The logic incorrectly assumes that possession of a current MFA token implies full account ownership rights, ignoring the principle that password confirmation should be required for destructive or identity-altering changes. This design oversight effectively bypasses the intended layer of protection provided by the primary credential, reducing the strength of multi-factor authentication to single-factor verification in specific administrative contexts.
The operational impact of this vulnerability is severe due to its potential for both unauthorized access and denial of service scenarios. An attacker with access to an authenticated user session can exploit this flaw to disable app-based MFA entirely or regenerate recovery codes without knowing the account password. This action could allow the attacker to maintain persistent access even if the legitimate user changes their password, as the new credentials would no longer be required for login under certain configurations. Furthermore, because changing the app-MFA configuration may lock out the legitimate user, this vulnerability can also be leveraged maliciously to cause a denial of service against specific accounts. By disabling MFA or regenerating codes without proper authorization checks, an attacker ensures that only they retain access while locking out the rightful owner, effectively hijacking the account's security posture and compromising its integrity.
This issue is categorized under CWE-284, which describes Improper Access Control, as it involves a failure to enforce appropriate restrictions on authenticated users regarding sensitive operations. Additionally, from an adversary behavior perspective, this vulnerability aligns with MITRE ATT&CK techniques related to Account Manipulation, specifically T1098, where attackers alter account credentials or configuration settings to maintain access and evade detection. The fact that email-based MFA is not affected highlights the inconsistency in security controls across different authentication methods within the framework, indicating a need for uniform validation standards regardless of the second factor type employed.
To mitigate this vulnerability, organizations using Filament must upgrade immediately to version 4.13.3 or 5.8.3, where these logic flaws have been corrected. Until an update is applied, developers should implement custom middleware or override default authentication controllers to enforce password confirmation for all MFA-related actions, ensuring that any change to security settings requires the re-entry of the primary account password rather than relying solely on existing session tokens or recovery codes. This additional layer of verification restores the intended security boundary and prevents unauthorized modification of multi-factor authentication configurations by attackers who have compromised user sessions but not their passwords.