CVE-2026-41139: mathjs — Fix

Description

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.

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CVSS v3.1 Score

8.8

HIGH

CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS — Exploit Prediction

0.0004

Probability of exploitation

0.13%

Percentile rank

EPSS estimates the probability that this vulnerability will be exploited in the wild within the next 30 days. A higher score means more likely to be exploited.

Weakness Type (CWE)

CWE-915 CWE-915

Affected Products

Vendor	Product	Versions
mathjs	mathjs	13.1.0 — 15.2.0

References

Advisories & Patches

https://github.com/josdejong/mathjs/commit/0aee2f61866e35ffa0aef915221cdf6b026ffdd4 https://github.com/josdejong/mathjs/commit/bcf0da46f0b8577ec03c9ecd7bff8b5c2543a611 https://github.com/josdejong/mathjs/pull/3656 https://github.com/josdejong/mathjs/security/advisories/GHSA-5v89-rwgr-qj6g

Other References

https://github.com/josdejong/mathjs/releases/tag/v15.2.0

Frequently Asked Questions

What is 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. It has a CVSS v3.1 base score of 8.8 (HIGH).

How severe is CVE-2026-41139? +

CVE-2026-41139 has a CVSS v3.1 score of 8.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching. The EPSS score is 0.0004, placing it in the 0th percentile for exploitation probability.

What products are affected by CVE-2026-41139? +

CVE-2026-41139 affects products from mathjs, specifically: mathjs. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2026-41139? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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