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Vulnerabilities

Vulnerability · CVE-2026-40897

Math.js is an extensive math library for JavaScript and Node.js.

Published Apr 24, 2026 · catalog updated Jul 15, 2026 · Math.js is an extensive

Check if you run it

No confirmed exploitation is on record for CVE-2026-40897. EPSS is 0.76%. Act only if a listed version of Math.js is an extensive is installed.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (Math.js is an extensive).
  • No version range is stored. A customer cannot check an installed version against this record.
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
High8.8
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.76%
Remediation
Advisory link
Affected products
cpe mathjs/mathjs

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe mathjs/mathjsversion unspecified

How to fix CVE-2026-40897

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2026-40897. EPSS is 0.76%. Act only if a listed version of Math.js is an extensive is installed.

Which versions are affected?

Affected version ranges are not on this record. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-915: Improperly Controlled Modification of Dynamically-Determined Object Attributes; CWE-917: Expression Language Injection. EPSS 0.76%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Apr 24, 2026 · NIST NVD

    Detected

    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.

  2. Jul 15, 2026 · NIST NVD

    Updated

    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.

Sources

  • CVE.orgVulnerability recordCVE-2026-40897

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2026-40897

    30-day exploitation probability 0.8%

    first.org
  • NIST NVDVulnerability recordCVE-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 expressio

    nvd.nist.gov

References

Freshness

Last verified in this catalog Oct 18, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.