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CVE-2026-44490— Axios: DoS & Header Injection via Prototype Pollution Read-Side Gadgets in axios merge functions

Quick assessment

Affected
axios axios
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
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 0.32.0之前版本和1.16.0之前版本存在安全漏洞，该漏洞源于存在两个读取侧原型污染小工具，可能导致上游依赖污染Object.prototype后，Axios静默使用污染值。

CVSS 4.8 · Medium EPSS 0.40% · P32

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application

Affected Version Matrix 2

VendorProduct Version RangeStatus
axios axios >= 1.0.0, < 1.16.0 affected
< 0.32.0 affected
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I. Basic Information for CVE-2026-44490

Vulnerability Information
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Vulnerability Title
Axios: DoS & Header Injection via Prototype Pollution Read-Side Gadgets in axios merge functions
Source: CVE Program / CVE List V5
Vulnerability Description
Axios is a promise based HTTP client for the browser and Node.js. Prior to 0.32.0 and 1.16.0, axios exposes two read-side prototype-pollution gadgets. When Object.prototype is polluted by an upstream dependency in the same process (e.g. lodash _.merge / CVE-2018-16487), axios silently picks up the polluted values. (1) lib/utils.js line 406 builds merge()'s accumulator as result = {}, so result[targetKey] (line 414) walks Object.prototype and the polluted bucket's own keys are copied into the merged headers and ride out on the wire. (2) lib/core/mergeConfig.js line 26 builds the hasOwnProperty descriptor as a plain-object literal. Object.defineProperty reads descriptor.get/descriptor.set via the prototype chain, so a polluted Object.prototype.get or Object.prototype.set makes the call throw TypeError synchronously on every axios request. This vulnerability is fixed in 0.32.0 and 1.16.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1321
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 0.32.0之前版本和1.16.0之前版本存在安全漏洞，该漏洞源于存在两个读取侧原型污染小工具，可能导致上游依赖污染Object.prototype后，Axios静默使用污染值。
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-2026-44490

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III. Intelligence Information for CVE-2026-44490

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Vendor Advisories for CVE-2026-44490 (1)

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

CVE-2026-44494 8.7 HIGH Axios: Full Man-in-the-Middle via Prototype Pollution Gadget in `config.proxy`
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-2026-44489 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-1321

V. Comments for CVE-2026-44490

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