CVE-2025-56572

Vulnerability

Overview

CVE-2025-56572 is a denial-of-service (DoS) vulnerability in the finance.js library version 4.1.0. The issue resides in the seekZero() function, which can be triggered by a remote attacker to cause the application to crash or become unresponsive. The official description states that the vulnerability allows a remote attacker to cause a denial of service via the seekZero() parameter [1][2].

Attack

Vector

The attack is exploitable remotely without requiring authentication. An attacker can craft a malicious request that passes a specially crafted value to the seekZero() function. The exact mechanism is not detailed in the available references, but the function likely fails to properly validate or handle certain inputs, leading to an infinite loop, excessive resource consumption or an unhandled exception that crashes the process [1][2].

Impact

Successful exploitation results in a denial of service, making the application unavailable to legitimate users. This can disrupt financial calculations and other services relying on the library. No other impacts, such as data theft or privilege escalation, have been reported [1][2].

Mitigation

As of the publication date (2025-09-30), no patch has been released. The project's GitHub repository [1] and the official website [3] do not mention a fix. Users should monitor the repository for updates or consider implementing input validation and error handling around calls to seekZero() as a temporary workaround.