CVEvulnerability
CVE-2025-13204
7.3 HIGH
Official page ↗
- Status
- Analyzed
- Published
- 2025-11-14
- Last modified
- 2026-10-07
- Assigner
- [email protected]
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 7.3 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
- Weaknesses
- CWE-1321
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.
Affected configurations
• silentmatt javascript expression evaluator
Related
Weakness · CWE (1)
- CWE-1321 Improperly Controlled Modification of Object Prototype Attributes weakness
References
- https://github.com/SECCON/SECCON2022_final_CTF/blob/main/jeopardy/web/babybox/solver/solver.py Product
- https://github.com/jorenbroekema/expr-eval Product
- https://github.com/silentmatt/expr-eval Product
- https://github.com/silentmatt/expr-eval/pull/252/files Issue Tracking, Patch
- https://github.com/vladko312/extras/blob/f549d505af300fd74a01b46fab2102990ff1c14d/expr-eval.py Product
- https://www.huntr.dev/bounties/1-npm-expr-eval/ Exploit, Third Party Advisory
- https://www.npmjs.com/package/expr-eval-fork Product