Description

A vulnerability has been found in mangroup dtale up to 3.22.0. This issue affects the function Login of the file dtale/auth.py of the component Login Endpoint. Such manipulation leads to improper restriction of excessive authentication attempts. The attack can be executed remotely. This attack is characterized by high complexity. The exploitability is assessed as difficult. The exploit has been disclosed to the public and may be used. The project was informed of the problem early through an issue report but has not responded yet.

Executive Summary

Technical Details

Mitigations

References

Additional Metadata

{
  "score": "3.7",
  "pubDate": "2026-08-15T16:16:38.680Z",
  "pubdate": "2026-08-15T16:16:38.680Z",
  "executiveSummary": "An improper restriction of excessive authentication attempts vulnerability has been identified within the mangroup dtale project up to version 3.22.0. The security flaw specifically resides within the Login function of the dtale/auth.py file, which serves as the application's login endpoint. This vulnerability allows remote threat actors to execute unauthorized authentication requests without adequate rate-limiting or throttling mechanisms in place.\nThe primary impact of this security deficiency involves potential brute-force and automated credential stuffing attacks against the authentication mechanism. The affected systems include deployments of D-Tale running vulnerable software versions where administrative or user interfaces are exposed over networks. While the attack vector is remote, the overall risk implication is tempered by characteristics indicating that the attack requires high complexity, and the exploitability is assessed as difficult.\nProject maintainers were informed of the vulnerability through an early issue report but have not yet provided an official response or patch. Exploitation requires persistent interaction with the affected endpoint, and attackers may leverage publicly disclosed exploit details to target exposed instances. Organizations utilizing the affected component must implement compensating controls at the network or proxy layer to mitigate potential brute-force activities.",
  "technicalDetails": "The vulnerability stems from an improper restriction of excessive authentication attempts within the authentication handling logic of the mangroup dtale application. Specifically, the vulnerability is localized to the Login function implemented in the dtale/auth.py file. This function processes incoming authentication requests sent to the login endpoint without enforcing adequate rate-limiting, account lockout policies, or CAPTCHA validation. Consequently, the component fails to restrict the volume or velocity of login attempts originating from remote clients.\nThe root cause is an architectural absence of brute-force mitigation controls within the application layer for the targeted login function. Affected versions include all mangroup dtale installations up to version 3.22.0. The vulnerability is network-exposed, meaning any remote adversary with network connectivity to the D-Tale instance can interact directly with the login endpoint. The authentication requirements for triggering the underlying logic are non-existent, as the endpoint is designed to handle unauthenticated login submissions; however, successful exploitation aims to bypass or defeat authentication through exhaustive trial-and-error methodologies.\nThe step-by-step attack flow proceeds as follows: First, the remote adversary identifies a network-accessible instance of mangroup dtale running a vulnerable version. Second, the attacker formulates an automated script or tool designed to target the Login function inside dtale/auth.py. Third, the attacker transmits a high volume of rapid HTTP requests containing varying credential combinations to the login endpoint. Fourth, because the application lacks rate-limiting mechanisms or request throttling, the server processes each authentication attempt sequentially without imposing delays, temporary IP blocks, or account lockouts. Finally, the attacker continues the exhaustive brute-force payload behavior until valid credentials are discovered or the target account is compromised.\nThe post-exploitation impact includes unauthorized access to the D-Tale interface, potentially exposing sensitive data analysis sessions, internal datasets, and underlying system execution contexts accessible through the application environment. Given that the exploit has been disclosed to the public, malicious actors can readily operationalize automated scripts against vulnerable endpoints."
}