CVE-2026-25639

Axios affected by Denial of Service via __proto__ Key in mergeConfig

Published Feb 9, 2026 CVSS 3.1 · 7.5 High EPSS 2.8% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
Github GHSA Github GHSA GHSA-43fc-jf86-j433 Axios is Vulnerable to Denial of Service via __proto__ Key in mergeConfig
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
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
Type Values Removed Values Added
Metrics ssvc

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

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

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Sep 10, 2026, 12:05 PM
Reserved
Feb 4, 2026, 5:15 AM
Status
Modified
Published
Feb 9, 2026, 9:15 PM
Modified
Sep 10, 2026, 1:17 PM
Severity
Important
Public date
Feb 9, 2026, 8:11 PM