Axios is a promise based HTTP client for the browser and Node.js. From 1.0.0 to before 1.16.0, the Axios library is vulnerable to a Prototype Pollution "Gadget" attack that allows any Object.prototype pollution in the application's dependency tree to be escalated into a full Man-in-the-Middle (MITM) attack — intercepting, reading, and modifying all HTTP traffic including authentication credentials. The HTTP adapter at lib/adapters/http.js:670 reads config.proxy via standard property access, which traverses the prototype chain. Because proxy is not present in Axios defaults, the merged config object has no own proxy property, making it trivially injectable via prototype pollution. Once injected, setProxy() routes all HTTP requests through the attacker's proxy server. This vulnerability is fixed in 1.16.0.
History

Sat, 13 Jun 2026 00:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-915
References
Metrics threat_severity

None

threat_severity

Important


Fri, 12 Jun 2026 18:15:00 +0000

Type Values Removed Values Added
CPEs cpe:2.3:a:axios:axios:*:*:*:*:*:node.js:*:*

Thu, 11 Jun 2026 20:00:00 +0000

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

Thu, 11 Jun 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Thu, 11 Jun 2026 16:45:00 +0000

Type Values Removed Values Added
Description Axios is a promise based HTTP client for the browser and Node.js. From 1.0.0 to before 1.16.0, the Axios library is vulnerable to a Prototype Pollution "Gadget" attack that allows any Object.prototype pollution in the application's dependency tree to be escalated into a full Man-in-the-Middle (MITM) attack — intercepting, reading, and modifying all HTTP traffic including authentication credentials. The HTTP adapter at lib/adapters/http.js:670 reads config.proxy via standard property access, which traverses the prototype chain. Because proxy is not present in Axios defaults, the merged config object has no own proxy property, making it trivially injectable via prototype pollution. Once injected, setProxy() routes all HTTP requests through the attacker's proxy server. This vulnerability is fixed in 1.16.0.
Title Axios: Full Man-in-the-Middle via Prototype Pollution Gadget in `config.proxy`
Weaknesses CWE-1321
CWE-441
References
Metrics cvssV3_1

{'score': 8.7, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published: 2026-06-11T15:32:03.155Z

Updated: 2026-06-13T03:55:29.203Z

Reserved: 2026-05-06T17:18:51.783Z

Link: CVE-2026-44494

cve-icon Vulnrichment

Updated: 2026-06-11T17:23:44.267Z

cve-icon NVD

Status : Analyzed

Published: 2026-06-11T17:16:33.313

Modified: 2026-06-12T18:01:25.840

Link: CVE-2026-44494

cve-icon Redhat

Severity : Important

Publid Date: 2026-06-11T15:32:03Z

Links: CVE-2026-44494 - Bugzilla