CVE-2026-12866

All versions of the package expr-eval are vulnerable to Code Execution via the toJSFunction API. An attacker can execute arbitrary JavaScript by supplying crafted expressions that are compiled into native code using new Function. Because user-controlled expressions are transformed directly into...

CVE-2026-12866

The CVE-2026-12866 entry concerns the npm package expr-eval. Affected versions are vulnerable to Code Execution via the toJSFunction() API, where user-supplied expressions are transformed into executable JavaScript with new Function(), allowing an attacker to escape the sandbox and run arbitrary ...

Code Execution

Overview expr-eval is a Mathematical expression evaluator Affected versions of this package are vulnerable to Code Execution via the toJSFunction API. An attacker can execute arbitrary JavaScript by supplying crafted expressions that are compiled into native code using new Function. Because...