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CVE-2026-44494— Axios: Full Man-in-the-Middle via Prototype Pollution Gadget in `config.proxy`

Quick assessment

Affected
axios axios
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Axios是Axios开源的一款基于Promise（异步编程的一种解决方案）的HTTP客户端。 Axios 1.0.0至1.16.0之前版本存在安全漏洞，该漏洞源于原型污染小工具攻击，可能导致应用程序依赖树中的Object.prototype污染升级为中间人攻击。

CVSS 8.7 · High EPSS 0.93% · P59

Affected Version Matrix 1

VendorProduct Version RangeStatus
axios axios >= 1.0.0, < 1.16.0 affected
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I. Basic Information for CVE-2026-44494

Vulnerability Information
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Vulnerability Title
Axios: Full Man-in-the-Middle via Prototype Pollution Gadget in `config.proxy`
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
未有动机的代理或中间人(混淆代理)
Source: CVE Program / CVE List V5
Vulnerability Title
Axios 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Axios是Axios开源的一款基于Promise（异步编程的一种解决方案）的HTTP客户端。 Axios 1.0.0至1.16.0之前版本存在安全漏洞，该漏洞源于原型污染小工具攻击，可能导致应用程序依赖树中的Object.prototype污染升级为中间人攻击。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
axios axios >= 1.0.0, < 1.16.0 -

II. Public POCs for CVE-2026-44494

# POC Description Source Link Shenlong Link
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Qwen3.6-35B-A3B · 7243 chars
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Trigger conditions & impact
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III. Intelligence Information for CVE-2026-44494

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Vendor Advisories for CVE-2026-44494 (1)

Same Patch Batch · axios · 2026-06-11 · 9 CVEs total

CVE-2026-44492 8.6 HIGH Axios: shouldBypassProxy does not recognize IPv4-mapped IPv6 addresses, allowing NO_PROXY
CVE-2026-44487 8.2 HIGH Axios: Proxy-Authorization Credential Leak to Origin Server Across HTTP-to-HTTPS Redirect
CVE-2026-44488 7.5 HIGH Axios: Allocation of Resources Without Limits or Throttling in axios
CVE-2026-44496 7.5 HIGH Axios: Regular Expression Denial of Service (ReDoS) via Cookie Name Injection
CVE-2026-44486 7.5 HIGH Axios: Proxy-Authorization header leaks to redirect target when proxy is re-evaluated to d
CVE-2026-44495 7.0 HIGH Axios: Credential Theft and Response Hijacking via Prototype Pollution Gadget in Config Me
CVE-2026-44490 4.8 MEDIUM Axios: DoS & Header Injection via Prototype Pollution Read-Side Gadgets in axios merge fun
CVE-2026-44489 3.7 LOW Axios: Proxy-Authorization Header Injection via Prototype Pollution — Incomplete Null-Prot

IV. Related Vulnerabilities

Same product: axios
Same vendor: axios
Same weakness: CWE-441

V. Comments for CVE-2026-44494

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