Disclosure summary
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.
Source-reported weakness categories
CWE-1321
Source-specific records & product guidance
Sources retain their own attribution and scoring. Follow the original record to confirm affected versions, fixed releases, and configuration conditions.
NIST National Vulnerability Database · NVD-CVE-2025-13204
Open original source · Updated Oct 07, 2026
Only CPE matches marked vulnerable=true are indexed. AND/OR platform conditions must be checked in the original NVD record.
| Vendor | Product / association | Version / bounds |
|---|---|---|
| silentmatt | javascript_expression_evaluator | * |
Original records & references
- NIST NVD record
- CVE Program record
- github.com — Product
- github.com — Product
- github.com — Product
- github.com — Issue Tracking, Patch
- github.com — Product
- www.huntr.dev — Exploit, Third Party Advisory
- www.npmjs.com — Product
PUBLISHED 2025-11-14T12:16:01-05:00
MODIFIED 2026-10-07T17:10:00-04:00
INGESTED 2026-10-08T12:35:23-04:00