GitHub Advisoryadvisory · npm
GHSA-29qv-4j9f-fjw5 Unsafe object property setter in mathjs
HIGH
Official page ↗
- Aliases
- CVE-2026-40897
- Ecosystem
- npm
- Packages
- mathjs
- Severity
- High
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-915
- Reviewed
- 2026-04-16
Affected packages
• npm mathjs: >= 13.1.1, < 15.2.0 → fixed in 15.2.0
Description
Impact
This security vulnerability allowed executing arbitrary JavaScript via the expression parser of mathjs. You can be affected when you have an application where users can evaluate arbitrary expressions using the mathjs expression parser.
Patches
The issue was introduced in mathjs `v13.1.1`, and patched in mathjs `v15.2.0`.
Workarounds
There is no workaround without upgrading to `v15.2.0`.
References
You can find out more via the commit fixing this issue: https://github.com/josdejong/mathjs/commit/513ab2a0e01004af91b31aada68fae8a821326ad (part of PR https://github.com/josdejong/mathjs/pull/3656).
Related
Alias · CVE (1)
- CVE-2026-40897 Math.js is an extensive math library for JavaScript and Node.js. vulnerability
Weakness · CWE (1)
- CWE-915 Improperly Controlled Modification of Dynamically-Determined Object Attributes weakness
References
- https://github.com/josdejong/mathjs/security/advisories/GHSA-29qv-4j9f-fjw5 web
- https://nvd.nist.gov/vuln/detail/CVE-2026-40897 advisory
- https://github.com/josdejong/mathjs/pull/3656 web
- https://github.com/josdejong/mathjs/commit/513ab2a0e01004af91b31aada68fae8a821326ad web
- https://github.com/josdejong/mathjs package