The expr-eval library is a JavaScript expression parser and evaluator designed to safely evaluate mathematical expressions with user-defined variables. However, due to insufficient input validation, an attacker can pass a crafted context object or use MEMBER of the context object into the evaluate() function and trigger arbitrary code execution.

While this flaw has not been exploited, the expr-eval JavaScript library is widely used. Patching should be performed as soon as possible to reduce risk.

Detections

Analytics

CVE-2025-12735

high

Vulnerable Software