PT-2025-45736 · Npm · Expr-Eval+1

Published 2025-11-05 · Updated 2025-11-05

OSV

CVSS v4.0

8.6

High

Base vector

AV:L/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

The expr-eval library is a JavaScript expression parser and evaluator designed to safely evaluate mathematical expressions with user-defined variables. However, due to insufficient input validation, an attacker can pass a crafted variables object into the evaluate() function and trigger arbitrary code execution.

Fix

Code Injection

Weakness Enumeration

CWE-94

Related Identifiers

GHSA-JC85-FPWF-QM7X

Affected Products

Expr-Eval

Expr-Eval-Fork

References · 12

• https://nvd.nist.gov/vuln/detail/CVE-2025-12735 · Security Note
• https://osv.dev/vulnerability/GHSA-jc85-fpwf-qm7x · Vendor Advisory
• https://github.com/silentmatt/expr-eval · Note
• https://github.com/silentmatt/expr-eval/pull/288 · Note
• https://github.com/silentmatt/expr-eval/pull/289 · Note
• https://github.com/jorenbroekema/expr-eval/blob/460b820ba01c5aca6c5d84a7d4f1fa5d1913c67b/test/security.js · Note
• https://github.com/jorenbroekema/expr-eval · Note
• https://github.com/jorenbroekema/expr-eval/commit/1d71bb2ca8f98df8de00e9cc4de8fdd468a7ad43 · Note
• https://kb.cert.org/vuls/id/263614 · Note
• https://github.com/advisories/GHSA-jc85-fpwf-qm7x · Note
• https://npmjs.com/package/expr-eval · Note
• https://npmjs.com/package/expr-eval-fork · Note