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CVE-2026-1245 is a code injection vulnerability in the Node.js binary-parser library affecting versions prior to 2.3.0. The flaw arises from unsafe dynamic code generation: the library constructs JavaScript parser logic at runtime using the Function constructor and directly interpolates user-controlled values, including parser field names and encoding parameters, into the generated source without adequate sanitization or validation. When an application builds parser definitions from untrusted input, an attacker can manipulate those values so that the generated parser contains attacker-supplied JavaScript, which is then compiled and executed in the context of the hosting Node.js process.
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binary-parser npm library vulnerability enabling arbitrary JavaScript execution; fixed in 2.3.0.
Unknown
Critical code injection in the Node.js binary-parser library caused by unsafe runtime code generation (Function constructor) where untrusted parser field names/encoding parameters are embedded into generated JavaScript without sanitization, enabling arbitrary JS execution in the Node.js process context.
A code injection / arbitrary JavaScript execution vulnerability in the Node.js binary-parser library caused by unsafe dynamic code generation (Function constructor) where user-controlled parser field names and encoding parameters are incorporated into generated code without validation, enabling attacker-controlled code execution in the Node.js process context.
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