CVE-2026-44494

Description

The vulnerability exists due to the HTTP adapter reading the config.proxy property via standard JavaScript property access rather than an explicit guard. Because proxy is not present in Axios's defaults, this allows the library to traverse the prototype chain and silently inherit injected values if the runtime environment suffers a prototype pollution flaw from another dependency.

Description (MITRE) cveawg.mitre.org

Pulled from cveawg.mitre.org/api/cve/CVE-2026-44494 on 2026-07-12. Shown when MITRE's text differs from the cvelistV5 mirror.

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.

Overview

State

—

Assigner (CNA)

—

CVSS severity

high

CVSS score

8.7 / 10

CVSS vector

AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N

Effective score

8.7 / 10 HIGH source: CNA overview

CWE(s)

—

Reserved

—

Published

—

Last updated

—

Source

https://www.tenable.com/cve/CVE-2026-44494

Linked Threat

CVE-2026-44494 — CVE-2026-44494

NVD triage scoring NVD CVE 2.0

Layer NVD adds on top of the CNA's CVE record — published / last-modified timestamps, exploitability / impact subscores, and the FIRST.org EPSS probability that this CVE will be exploited in the wild in the next 30 days.

NVD published

2026-06-11 17:16:33 UTC

NVD last modified

2026-07-10 12:16:59 UTC

NVD CVSS v3.1

8.7 / 10 HIGH source: security-advisories@github.com

NVD CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N

Exploitability subscore

2.2 / 10

Impact subscore

5.8 / 10

EPSS score

0.0104 (probability of exploitation in next 30 days)

EPSS percentile

59.99% vs all CVEs — higher = more likely to be exploited, as of 2026-07-11

NVD-assigned CWE(s): CWE-441, CWE-1321, CWE-915 (differs from the CNA list above)

European Union Vulnerability Database ENISA EUVD

ENISA's official EU repository for curated vulnerability intelligence. Carries a separate identifier (EUVD-YYYY-NNNN) and frequently exposes an earlier-published description + CVSS than NVD does.

EUVD ID

EUVD-2026-36257

Assigner

GitHub_M

Published

Jun 11, 2026, 3:32:03 PM

Updated

Jul 31, 2026, 12:04:47 PM

EUVD base score (CVSS 3.1)

8.7 / 10
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N

EUVD-reported EPSS

1.0400

Vendors

axios

Products

axios (1.0.0, < 1.16.0)

Aliases

GHSA-35jp-ww65-95wh

ENISA 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.

Vendor references (0)

References embedded in the original CVE record by the assigning CNA.

None in the CVE record.

MITRE references (1) cveawg.mitre.org

Pulled from MITRE's CVE Services API by the 🛰 Backfill from MITRE button.

• https://github.com/axios/axios/security/advisories/GHSA-35jp-ww65-95wh x_refsource_CONFIRM

Web references (2)

DuckDuckGo results ranked by threat-intel / vendor advisory domains. Generated by the 🔎 Find references (web) button above — same flow as the Remediations search.

• https://nvd.nist.gov/vuln/detail/CVE-2026-44494 tenable:nvd.nist.gov
• https://www.cve.org/CVERecord?id=CVE-2026-44494 tenable:www.cve.org

Remediations are stored against the linked Threat row; the list below is deduplicated across both pages.

• CVE-2026-44494 | medium | CveMate
  web:cvemate.com

  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 ...

  2026-06-19 02:33 UTC
• CVE-2026-44494 - Exploits & Severity - Feedly
  web:feedly.com

  Mitigation Update Axios to version 1.16.0 or later. Implement protections against prototype pollution vulnerabilities in the application and its dependencies through code review and security scanning. Consider using Object.freeze on critical prototypes if feasible.

  2026-06-19 02:33 UTC
• axios Vulnerable to Full Man-in-the-Middle via Prototype ... - GitHub
  web:github.com

  Fix 2: Enumerate all properties not in defaults and apply hasOwnProperty Properties not in defaults that are read by http.js and have security impact: config.proxy — MITM config.socketPath — Unix socket SSRF config.transport — request hijack config.lookup — DNS hijack config.beforeRedirect — redirect manipulation

  2026-06-19 02:33 UTC
• Security: Dependency upgrade request for axios to resolve high ... - GitHub
  web:github.com

  Blame commit: a40612ef by mabdullahabaid — fix : axios related dependabot alerts (#17821) Suggested Fix Upgraded direct axios dependency declarations to the patched range (^1.16.1) in every affected runtime package identified by the RCA:

  2026-06-19 02:33 UTC
• CVE-2026-44494 | Security Details | Sonatype Guide
  web:guide.sonatype.com

  Find vulnerabilities. Fix fast with AI. Search components by package, version, or CVE to get started. Unlock full vulnerability insights and fix guidance with Sonatype Guide.

  2026-06-19 02:33 UTC
• Prototype Pollution in axios | CVE-2026-44494 | Snyk
  web:security.snyk.io

  axios is a promise-based HTTP client for the browser and Node.js. Affected versions of this package are vulnerable to Prototype Pollution through the config.proxy property in the HTTP adapter, which accesses properties via the prototype chain. An attacker can intercept and modify all HTTP requests and responses, including sensitive authentication credentials, by polluting the Object.prototype ...

  2026-06-19 02:33 UTC
• CVE-2026-44494: axios Prototype Pollution Vulnerability Leading to Full ...
  web:vulert.com

  Learn about CVE-2026-44494 , a critical vulnerability in Axios that allows for full Man-in-the-Middle attacks via prototype pollution. Update your package to secure your application.

  2026-06-19 02:33 UTC
• Oracle Critical Patch Update Advisory - April 2026
  web:www.oracle.com

  Oracle Critical Patch Update Advisory - April 2026 Description A Critical Patch Update is a collection of patches for multiple security vulnerabilities. These patches address vulnerabilities in Oracle code and in third party components included in Oracle products. These patches are usually cumulative, but each advisory describes only the security patches added since the previous Critical Patch ...

  2026-06-19 02:33 UTC
• Oracle Critical Security Patch Update Advisory - May 2026
  web:www.oracle.com

  This Critical Security Patch Update contains 35 new security patches across the product families listed below. Please note that an MOS note summarizing the content of this Critical Security Patch Update and other Oracle Software Security Assurance activities is located at May 2026 Critical Security Patch Update: Executive Summary and Analysis.

  2026-06-19 02:33 UTC
• CVE-2026-44494 - High Vulnerability - TheHackerWire
  web:www.thehackerwire.com

  What is CVE-2026-44494 ? How severe is CVE-2026-44494 ? What Axios products are affected by CVE-2026-44494 ? How do I fix or mitigate CVE-2026-44494 ? When was CVE-2026-44494 disclosed?

  2026-06-19 02:33 UTC

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