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.

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Vendors Products
Advisories
Source ID Title
Github GHSA Github GHSA GHSA-43fc-jf86-j433 Axios is Vulnerable to Denial of Service via __proto__ Key in mergeConfig
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Wed, 18 Feb 2026 18:00:00 +0000

Type Values Removed Values Added
Description Axios is a promise based HTTP client for the browser and Node.js. Prior to 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 1.13.5. 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.
CPEs cpe:2.3:a:axios:axios:*:*:*:*:*:node.js:*:*
References

Thu, 12 Feb 2026 00:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-1287
References
Metrics threat_severity

None

threat_severity

Important


Tue, 10 Feb 2026 17:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 10 Feb 2026 16:30:00 +0000

Type Values Removed Values Added
First Time appeared Axios
Axios axios
Vendors & Products Axios
Axios axios

Mon, 09 Feb 2026 20:30:00 +0000

Type Values Removed Values Added
Description Axios is a promise based HTTP client for the browser and Node.js. Prior to 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 1.13.5.
Title Axios affected by Denial of Service via __proto__ Key in mergeConfig
Weaknesses CWE-754
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-02-18T17:16:16.391Z

Reserved: 2026-02-04T05:15:41.791Z

Link: CVE-2026-25639

cve-icon Vulnrichment

Updated: 2026-02-10T15:39:47.277Z

cve-icon NVD

Status : Modified

Published: 2026-02-09T21:15:49.010

Modified: 2026-02-18T18:24:34.120

Link: CVE-2026-25639

cve-icon Redhat

Severity : Important

Publid Date: 2026-02-09T20:11:22Z

Links: CVE-2026-25639 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-02-10T16:26:51Z

Weaknesses