CVE-2025-12735

Nov. 20, 2025, 4:15 p.m.

9.8
Critical

Description

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 context object or use MEMBER of the context object into the evaluate() function and trigger arbitrary code execution.

Product(s) Impacted

Product Versions
expr-eval
  • *

Weaknesses

Common security weaknesses mapped to this vulnerability.

References

https://github.com/advisories/GHSA-jc85-fpwf-qm7x
https://github.com/jorenbroekema/expr-eval
https://github.com/silentmatt/expr-eval
https://github.com/silentmatt/expr-eval/pull/288
https://kb.cert.org/vuls/id/263614
https://www.npmjs.com/package/expr-eval
https://www.npmjs.com/package/expr-eval-fork
https://www.kb.cert.org/vuls/id/263614
https://github.com/jorenbroekema/expr-eval/blob/460b820ba01c5aca6c5d84a7d4f1fa5d1913c67b/test/security.js

Tags

cret@cert.org
2025-11-05
CVE-2025-12735

CVSS Score

9.8 / 10

CVSS Data - 3.1

  • Attack Vector: NETWORK
  • Attack Complexity: LOW
  • Privileges Required: NONE
  • Scope: UNCHANGED
  • Confidentiality Impact: HIGH
  • Integrity Impact: HIGH
  • Availability Impact: HIGH

    • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

    View Vector String

Timeline

Published: Nov. 5, 2025, 1:15 a.m.
Last Modified: Nov. 20, 2025, 4:15 p.m.

Status : Awaiting Analysis

CVE has been marked for Analysis. Normally once in this state the CVE will be analyzed by NVD staff within 24 hours.

More info

Source

cret@cert.org

*Disclaimer: Some vulnerabilities do not have an associated CPE. To enhance the data, we use AI to infer CPEs based on CVE details. This is an automated process and might not always be accurate.