Vulnerability library
Security checkDecember 09, 2025

expr-eval does not restrict functions passed to the evaluate function

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High severitynpmexpr-eval-fork

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Description

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 variables object into the evaluate() function and trigger arbitrary code execution.

Recommendation

Update the expr-eval-fork package to the latest compatible version. Followings are version details:

  • Affected version(s): <= 3.0.0
  • Patched version(s): 3.0.1

References

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Related Issues

See something that needs correcting? Let us knowUpdated December 09, 2025