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.
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.

References
Link Providers
https://access.redhat.com/errata/RHSA-2026:10184 cve-icon
https://access.redhat.com/errata/RHSA-2026:11414 cve-icon
https://access.redhat.com/errata/RHSA-2026:13542 cve-icon
https://access.redhat.com/errata/RHSA-2026:13548 cve-icon
https://access.redhat.com/errata/RHSA-2026:19712 cve-icon
https://access.redhat.com/errata/RHSA-2026:25041 cve-icon
https://access.redhat.com/errata/RHSA-2026:2694 cve-icon
https://access.redhat.com/errata/RHSA-2026:3087 cve-icon
https://access.redhat.com/errata/RHSA-2026:3105 cve-icon
https://access.redhat.com/errata/RHSA-2026:3106 cve-icon
https://access.redhat.com/errata/RHSA-2026:3107 cve-icon
https://access.redhat.com/errata/RHSA-2026:3109 cve-icon
https://access.redhat.com/errata/RHSA-2026:36882 cve-icon
https://access.redhat.com/errata/RHSA-2026:41064 cve-icon
https://access.redhat.com/errata/RHSA-2026:4942 cve-icon
https://access.redhat.com/errata/RHSA-2026:5142 cve-icon
https://access.redhat.com/errata/RHSA-2026:5168 cve-icon
https://access.redhat.com/errata/RHSA-2026:5174 cve-icon
https://access.redhat.com/errata/RHSA-2026:5633 cve-icon
https://access.redhat.com/errata/RHSA-2026:5636 cve-icon
https://access.redhat.com/errata/RHSA-2026:5665 cve-icon
https://access.redhat.com/errata/RHSA-2026:5807 cve-icon
https://access.redhat.com/errata/RHSA-2026:6170 cve-icon
https://access.redhat.com/errata/RHSA-2026:6174 cve-icon
https://access.redhat.com/errata/RHSA-2026:6192 cve-icon
https://access.redhat.com/errata/RHSA-2026:6277 cve-icon
https://access.redhat.com/errata/RHSA-2026:6308 cve-icon
https://access.redhat.com/errata/RHSA-2026:6309 cve-icon
https://access.redhat.com/errata/RHSA-2026:6428 cve-icon
https://access.redhat.com/errata/RHSA-2026:6497 cve-icon
https://access.redhat.com/errata/RHSA-2026:6567 cve-icon
https://access.redhat.com/errata/RHSA-2026:6568 cve-icon
https://access.redhat.com/errata/RHSA-2026:6802 cve-icon
https://access.redhat.com/errata/RHSA-2026:7249 cve-icon
https://access.redhat.com/errata/RHSA-2026:8218 cve-icon
https://access.redhat.com/errata/RHSA-2026:8229 cve-icon
https://access.redhat.com/errata/RHSA-2026:8499 cve-icon
https://access.redhat.com/errata/RHSA-2026:8500 cve-icon
https://access.redhat.com/errata/RHSA-2026:8501 cve-icon
https://access.redhat.com/errata/RHSA-2026:9848 cve-icon
https://access.redhat.com/security/cve/CVE-2026-25639 cve-icon
https://bugzilla.redhat.com/show_bug.cgi?id=2438237 cve-icon
https://github.com/axios/axios/commit/28c721588c7a77e7503d0a434e016f852c597b57 cve-icon cve-icon cve-icon
https://github.com/axios/axios/commit/d7ff1409c68168d3057fc3891f911b2b92616f9e cve-icon cve-icon
https://github.com/axios/axios/pull/7369 cve-icon cve-icon
https://github.com/axios/axios/pull/7388 cve-icon cve-icon
https://github.com/axios/axios/releases/tag/v0.30.3 cve-icon cve-icon
https://github.com/axios/axios/releases/tag/v1.13.5 cve-icon cve-icon cve-icon
https://github.com/axios/axios/security/advisories/GHSA-43fc-jf86-j433 cve-icon cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2026-25639 cve-icon
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-25639.json cve-icon
https://www.cve.org/CVERecord?id=CVE-2026-25639 cve-icon
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: 2026-08-12T12:04:49.167Z

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

Link: CVE-2026-25639

cve-icon Vulnrichment

Updated: 2026-08-12T12:04:49.167Z

cve-icon NVD

Status : Modified

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

Modified: 2026-08-12T12:17:57.560

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: 2026-08-02T02:45:03Z

Weaknesses