What’s Vulnerable › Vulnerabilities

CVE-2025-12735: CVE-2025-12735

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2025-11-05 · updated 2026-10-18
• Weakness: CWE-94

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.

Affected products

• Jorenbroekema Javascript Expression Evaluator: 3.0.0
• silentmatt Javascript Expression Evaluator: through 2.0.2

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

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