CVE-2025-12735

EUVD-2025-37820
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.
Code Injection
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CISA-ADPADP
9.8 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 15%
Affected Products (NVD)
VendorProductVersion
jorenbroekemajavascript_expression_evaluator
3.0.0
silentmattjavascript_expression_evaluator
𝑥
≤ 2.0.2
𝑥
= Vulnerable software versions
Common Weakness Enumeration
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