Description
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.
References
- www.cve.org/CVERecord ↗
- nvd.nist.gov/vuln/detail/CVE-2025-13204 ↗
- github.com/SECCON/SECCON2022_final_CTF/blob/main/jeopardy/web/babybox/solver/solver.py ↗
- github.com/jorenbroekema/expr-eval ↗
- github.com/silentmatt/expr-eval ↗
- github.com/silentmatt/expr-eval/pull/252/files ↗
- github.com/vladko312/extras/blob/f549d505af300fd74a01b46fab2102990ff1c14d/expr-eval.py ↗
- www.huntr.dev/bounties/1-npm-expr-eval/ ↗
- www.npmjs.com/package/expr-eval-fork ↗
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This product uses the NVD API but is not endorsed or certified by the NVD. CVSS scores do not establish exploitation.