CVE-2026-25639: Axios

High severity, CVSS 7.5. EPSS: 2% chance of exploitation in the next 30 days.

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.

Affected products

• Axios Axios: before 0.30.3 (fixed in 0.30.3); from 1.0.0, before 1.13.5 (fixed in 1.13.5)

Published 2026-02-09. Last modified 2026-09-10.