Node.js binary-parser Vulnerability Allows Arbitrary Code Execution
CVE-2026-1245 affects all versions of the npm library prior to 2.3.0, used widely for parsing binary data.
A vulnerability in the npm library binary-parser could allow arbitrary JavaScript code execution, affecting all versions prior to 2.3.0, security researchers disclosed on January 23.
Vulnerability Details
CVE-2026-1245 affects the binary-parser library, which is used for parsing binary data in Node.js applications. The flaw could enable attackers to execute arbitrary JavaScript code within affected applications.
Impact
The binary-parser library is used in various applications that need to read and interpret binary file formats, network protocols, and data structures. Applications processing untrusted binary input are most at risk.
Remediation
Developers should update to binary-parser version 2.3.0 or later, which includes a fix for the vulnerability. Applications using older versions should be updated immediately, particularly those processing binary data from untrusted sources.
Discovery
The vulnerability was responsibly disclosed to the maintainers, who released a patched version. Users of the library are encouraged to review their dependencies and update accordingly.
This incident highlights the importance of maintaining up-to-date dependencies in Node.js applications, particularly for libraries handling data parsing.
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