Authentication Bypass Vulnerability in Rocket.Chat

CVE-2026-28514

What is CVE-2026-28514?

CVE-2026-28514 is a critical authentication bypass vulnerability affecting Rocket.Chat, an open-source communication platform designed for secure and customizable interactions among users. The flaw resides within the account service of the ddp-streamer microservice, which is responsible for handling user authentication. Due to a programming oversight—specifically, the omission of an await keyword in an asynchronous password validation function—any attacker who possesses or can guess a username can authenticate as that user by supplying any arbitrary password. This vulnerability poses a significant risk to organizations utilizing Rocket.Chat for communication, as it can lead to unauthorized account access and possible data breaches.

Potential impact of CVE-2026-28514

1. Account Takeover: Attackers can gain unauthorized access to user accounts, leading to potential misuse of sensitive information and unauthorized actions within the platform.

2. Data Breach: With the capability to impersonate legitimate users, threats to the confidentiality, integrity, and availability of organizational data can increase significantly, potentially resulting in data leaks.

3. Reputation Damage: Organizations may suffer reputational harm due to compromised accounts, particularly if sensitive communications or personal information are exposed, causing loss of customer trust and business integrity.

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