Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2026-42039

CVE-2026-42039MEDIUM

Axios: unbounded recursion in toFormData causes DoS via deeply nested request data

  AV  AC  AT  PR  UI  VC  VI  VA   CVSS    EPSS   %ile   KEV
   N   L   N   N   N   N   N   L    6.9   .0097   60.4     —

AFFECTED
  Product  Versions              Fixed
  axios    >= 1.0.0, < 1.15.1 –  —

TIMELINE
  Apr 23  Reserved by GitHub_M
  Apr 24  Published (CNA: GitHub_M)
  Aug 24  EXPLOIT PUBLISHED — CVE-2026-42039 (axios). Public exploit reference added.
  Aug 26  EXPLOIT PUBLISHED — CVE-2026-42039 (axios). Public exploit reference added.
  Sep 4   EXPLOIT PUBLISHED — CVE-2026-42039 (axios). Public exploit reference added.
  Sep 7   EXPLOIT PUBLISHED — CVE-2026-42039 (axios). Public exploit reference added.
  Sep 9   EXPLOIT PUBLISHED — CVE-2026-42039 (axios). Public exploit reference added.
  Sep 10  EXPLOIT PUBLISHED — CVE-2026-42039 (axios). Public exploit reference added.

CWE-674, CWE-770 · CNA: GitHub_M · CVSS v4.0 · 43 references · NVD status: Modified

Description

Axios is a promise based HTTP client for the browser and Node.js. Prior to 1.15.1 and 0.31.1, toFormData recursively walks nested objects with no depth limit, so a deeply nested value passed as request data crashes the Node.js process with a RangeError. This vulnerability is fixed in 1.15.1 and 0.31.1.

Lifecycle

Complete event history — 8 events, chronological
Date	Event	Detail
April 23, 2026	Reserved	Reserved by GitHub_M
April 24, 2026	Published	Published (CNA: GitHub_M)
August 24, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-42039 (axios). Public exploit reference added.
August 26, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-42039 (axios). Public exploit reference added.
September 4, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-42039 (axios). Public exploit reference added.
September 7, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-42039 (axios). Public exploit reference added.
September 9, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-42039 (axios). Public exploit reference added.
September 10, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-42039 (axios). Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
axios	axios	—	>= 1.0.0, < 1.15.1	—

Weaknesses

CWE-674 · CWE-770

References (43)

Authoritative record: CVE-2026-42039 at cve.org

Vendors: axios

Weaknesses: CWE-674 · CWE-770

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-42039 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.