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-2026-25639

CVE-2026-25639HIGH

Axios affected by Denial of Service via __proto__ Key in mergeConfig

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   N   L   N   N  U  N  N  H    7.5   .0180   77.8     —

AFFECTED
  Product  Versions              Fixed
  axios    >= 1.0.0, < 1.13.5 –  —

TIMELINE
  Feb 4   Reserved by GitHub_M
  Feb 9   Published (CNA: GitHub_M)
  Aug 24  EXPLOIT PUBLISHED — CVE-2026-25639 (axios). Public exploit reference added.
  Aug 25  EXPLOIT PUBLISHED — CVE-2026-25639 (axios). Public exploit reference added.
  Aug 26  EXPLOIT PUBLISHED — CVE-2026-25639 (axios). Public exploit reference added.
  Sep 4   EXPLOIT PUBLISHED — CVE-2026-25639 (axios). Public exploit reference added.
  Sep 7   EXPLOIT PUBLISHED — CVE-2026-25639 (axios). Public exploit reference added.
  Sep 9   EXPLOIT PUBLISHED — CVE-2026-25639 (axios). Public exploit reference added.
  Sep 10  EXPLOIT PUBLISHED — CVE-2026-25639 (axios). Public exploit reference added.

CWE-754, CWE-1287 · CNA: GitHub_M · CVSS v3.1 · 50 references · NVD status: Modified

Description

Axios is a promise based HTTP client for the browser and Node.js. Prior to versions 0.30.3 and 1.13.5, the mergeConfig function in axios crashes with a TypeError when processing configuration objects containing __proto__ as an own property. An attacker can trigger this by providing a malicious configuration object created via JSON.parse(), causing complete denial of service. This vulnerability is fixed in versions 0.30.3 and 1.13.5.

Lifecycle

Complete event history — 9 events, chronological
Date	Event	Detail
February 4, 2026	Reserved	Reserved by GitHub_M
February 9, 2026	Published	Published (CNA: GitHub_M)
August 24, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-25639 (axios). Public exploit reference added.
August 25, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-25639 (axios). Public exploit reference added.
August 26, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-25639 (axios). Public exploit reference added.
September 4, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-25639 (axios). Public exploit reference added.
September 7, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-25639 (axios). Public exploit reference added.
September 9, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-25639 (axios). Public exploit reference added.
September 10, 2026	EXPLOIT PUBLISHED	EXPLOIT PUBLISHED — CVE-2026-25639 (axios). Public exploit reference added.

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
axios	axios	—	>= 1.0.0, < 1.13.5	—

Weaknesses

CWE-754 · CWE-1287

References (50)

Authoritative record: CVE-2026-25639 at cve.org

Vendors: axios

Weaknesses: CWE-754 · CWE-1287

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-25639 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.