smp46 Pingvin Share X up to 1.18.0 TOTP Settings auth.service.ts authenticateUser improper synchronization

Summaryinfo

A vulnerability categorized as critical has been discovered in smp46 Pingvin Share X up to 1.18.0. Affected is the function authenticateUser of the file auth.service.ts of the component TOTP Settings. The manipulation results in improper synchronization. This vulnerability is cataloged as CVE-2026-49467. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability classified as critical has been found in smp46 Pingvin Share X up to 1.18.0. Affected is the function authenticateUser of the file auth.service.ts of the component TOTP Settings. The manipulation with an unknown input leads to a improper synchronization vulnerability. CWE is classifying the issue as CWE-662. The product utilizes multiple threads or processes to allow temporary access to a shared resource that can only be exclusive to one process at a time, but it does not properly synchronize these actions, which might cause simultaneous accesses of this resource by multiple threads or processes. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Pingvin Share X is a secure and easy self-hosted file sharing platform. A vulnerability in versions 1.5.0 through 1.18.0 allow an attacker to bypass password verification when managing Time-based One-Time Password (TOTP) settings. The root cause is a missing `await` keyword on calls to the asynchronous `verifyPassword` method in `authTotp.service.ts` and the `authenticateUser` method in `auth.service.ts`. In JavaScript, an unawaited `Promise` is always truthy. So the logic intended to throw a `ForbiddenException` when a password is incorrect. It never executes because the expression evaluates the existence of the `Promise` object rather than its resolved boolean result. The vulnerability is fixed in version 1.18.1 by ensuring all asynchronous authentication calls are properly awaited. There are no official workarounds. If a user is locked out, an administrator must manually reset the user's TOTP status in the database.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2026-49467 since 05/30/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are known technical details, but no exploit is available.

Upgrading to version 1.18.1 eliminates this vulnerability.

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Productinfo

Vendor

• smp46

Name

• Pingvin Share X

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4
• 1.5
• 1.6
• 1.7
• 1.8
• 1.9
• 1.10
• 1.11
• 1.12
• 1.13
• 1.14
• 1.15
• 1.16
• 1.17
• 1.18.0

CPE 2.3info

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CPE 2.2info

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