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EUVD-2026-337268

fkie_cve-2026-40897

Math.js is an extensive math library for JavaScript and Node.js. From 13.1.1 to before 15.2.0, a 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. This vulnerability is fixed in 15.2.0.

GHSA-29qv-4j9f-fjw5 — Unsafe object property setter in mathjs

Affected: npm: mathjs

### 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).