CVE-2026-25639highobserved exploitationCWE-1287CWE-754

CVE-2026-25639: high-severity vulnerability in axios

Axios affected by Denial of Service via __proto__ Key in mergeConfig

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43Vexday Risk Score

Prioritize patching. It exploitation observed by VulnCheck.

ssvc Actcvss 7.5epss 2.8%
from disclosure to weapon
Published on NVDFeb 9
VulnCheck+261d
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected products
axios · axios
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