CVE-2026-25639
Axios affected by Denial of Service via __proto__ Key in mergeConfig
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-754 |
| Vendor | axios |
| Product | axios |
| Published | Feb 9, 2026 |
| Last Updated | Feb 18, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Affected Versions
axios / axios
>= 1.0.0, < 1.13.5 < 0.30.3
References
github.com: https://github.com/axios/axios/security/advisories/GHSA-43fc-jf86-j433 github.com: https://github.com/axios/axios/pull/7369 github.com: https://github.com/axios/axios/pull/7388 github.com: https://github.com/axios/axios/commit/28c721588c7a77e7503d0a434e016f852c597b57 github.com: https://github.com/axios/axios/commit/d7ff1409c68168d3057fc3891f911b2b92616f9e github.com: https://github.com/axios/axios/releases/tag/v0.30.3 github.com: https://github.com/axios/axios/releases/tag/v1.13.5