Vulnerability in mathjs (CVE-2026-41139)
Summary
Vulnerability in mathjs (CVE-2026-41139). Successful exploitation can lead to full system takeover. Mitigation: upgrade to 15.2.0 or later.
Original description
The description as published by the source.
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.
Source: NIST National Vulnerability Database NVD GitHub Advisory
Auto-generated summary
Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.
A vulnerability tracked as CVE-2026-41139 has been found in mathjs.
Successful exploitation can lead to full system takeover. CVSS score: 8.8/10.
What to do: upgrade mathjs to 15.2.0 or later.
If unsure, ask your IT team or search "mathjs CVE-2026-41139" on the vendor's site.
CVE-2026-41139 (mathjs) — CWE-915 / CVSS v3 8.8
Attack vector: remote (network-reachable) / no user interaction
Patched: 15.2.0 — apply immediately
Workaround: There is no workaround without upgrading to v15.2.0.
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.
A vulnerability (CWE-915) exists in mathjs.
Check the vendor advisory for the affected versions of mathjs.
Severity: High (CVSS 8.8/10). Successful exploitation can lead to full system takeover.
Update to 15.2.0.
Workaround: There is no workaround without upgrading to v15.2.0.
Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'mathjs' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.
Response actions
Concrete steps and command examples for SOC/SRE teams to execute in order
-
1Identify exposure identify
grep -r 'mathjs' . | grep -v node_modulesリポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で
mathjsを grep し、稼働しているサービス・バージョンを把握する。 -
2Apply temporary workaround mitigate
There is no workaround without upgrading to `v15.2.0`.パッチが適用されるまでの応急処置として、There is no workaround without upgrading to
v15.2.0. を実施。回避策の副作用 (機能低下) を確認した上で。 -
3Apply patch patch
Upgrade mathjs to 15.2.0ステージング環境で 15.2.0 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。
-
4Post-deployment verification verify
Confirm patched version is live in productionパッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。
Affected packages
References
- advisory github.com
- advisory nvd.nist.gov
- advisory access.redhat.com
- advisory github.com
- package github.com
- patch github.com
- patch github.com
- patch github.com
- report bugzilla.redhat.com
- web github.com
- web github.com
- web github.com
- web security.access.redhat.com