RCE in Josdejong Mathjs
CVE-2026-41139
Math.js is an extensive math library for JavaScript and Node.js. From version 13.1.0 to before version 15.2.0, arbitrary JavaScript can be executed via the expression parser of mathjs. This issue has been patched in version 15.2.0.
Vulnerability class: Mass Assignment
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.008 (54.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 55th percentile — 54.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.006 · newest: 0.008 · change: +0.002
Affected products
- Josdejong Mathjs — versions >= 13.1.0, < 15.2.0
- Mathjs
Weakness classification (CWE)
References
- github.com/josdejong/mathjs/security/advisories/GHSA-5v89-rwgr-qj6g (Patch, Vendor Advisory)
- github.com/josdejong/mathjs/pull/3656 (Patch, Issue Tracking)
- github.com/josdejong/mathjs/commit/0aee2f61866e35ffa0aef915221cdf6b026ffdd4 (Patch)
- github.com/josdejong/mathjs/commit/bcf0da46f0b8577ec03c9ecd7bff8b5c2543a611 (Patch)
- github.com/josdejong/mathjs/releases/tag/v15.2.0 (Release Notes)
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Frequently asked questions
- What is CVE-2026-41139?
- CVE-2026-41139 is a high-severity vulnerability in Josdejong Mathjs, classified under Improperly Controlled Modification of Dynamically-Determined Object Attributes. CVSS score: 8.8/10. Published 2026-05-07.
- How severe is CVE-2026-41139?
- High severity. CVSS v3 base score is 8.8 out of 10.