Vulnerability Details CVE-2025-13204
npm package `expr-eval` is vulnerable to Prototype Pollution. An attacker with access to express eval interface can use JavaScript prototype-based inheritance model to achieve arbitrary code execution. The npm expr-eval-fork package resolves this issue.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 25.0%
CVSS Severity
CVSS v3 Score 7.3
References
- https://github.com/SECCON/SECCON2022_final_CTF/blob/main/jeopardy/web/babybox/solver/solver.py
- https://github.com/jorenbroekema/expr-eval
- https://github.com/silentmatt/expr-eval
- https://github.com/silentmatt/expr-eval/pull/252/files
- https://github.com/vladko312/extras/blob/f549d505af300fd74a01b46fab2102990ff1c14d/expr-eval.py
- https://www.huntr.dev/bounties/1-npm-expr-eval/
- https://www.npmjs.com/package/expr-eval-fork
Products affected by CVE-2025-13204
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cpe:2.3:a:silentmatt:javascript_expression_evaluator:0.10.0
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cpe:2.3:a:silentmatt:javascript_expression_evaluator:0.10.1
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cpe:2.3:a:silentmatt:javascript_expression_evaluator:0.11.0
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cpe:2.3:a:silentmatt:javascript_expression_evaluator:0.12.0
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cpe:2.3:a:silentmatt:javascript_expression_evaluator:1.0.0
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cpe:2.3:a:silentmatt:javascript_expression_evaluator:1.0.1
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cpe:2.3:a:silentmatt:javascript_expression_evaluator:1.1.0
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cpe:2.3:a:silentmatt:javascript_expression_evaluator:1.1.1
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cpe:2.3:a:silentmatt:javascript_expression_evaluator:1.2.0
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cpe:2.3:a:silentmatt:javascript_expression_evaluator:1.2.1
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cpe:2.3:a:silentmatt:javascript_expression_evaluator:1.2.2
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cpe:2.3:a:silentmatt:javascript_expression_evaluator:1.2.3
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cpe:2.3:a:silentmatt:javascript_expression_evaluator:2.0.0
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cpe:2.3:a:silentmatt:javascript_expression_evaluator:2.0.1
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cpe:2.3:a:silentmatt:javascript_expression_evaluator:2.0.2