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.
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-40897.json
https://github.com/josdejong/mathjs/security/advisories/GHSA-29qv-4j9f-fjw5
https://github.com/josdejong/mathjs/pull/3656
https://github.com/josdejong/mathjs/commit/513ab2a0e01004af91b31aada68fae8a821326ad
https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-25571