CVE-2025-13204
critical · 9.8npm 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.
9.8
CVSS
0.5%
EPSS (exploit prob.)
42nd
EPSS percentile
2025-11-14
Published
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-1321
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| silentmatt | javascript_expression_evaluator | all versions |
Check a specific version with /api/v1/cve/match.
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
Query this programmatically:
curl https://evil-db.io/api/v1/cve/CVE-2025-13204