CVE-2026-44495

Description

The vulnerability exists due to the mergeConfig() logic reading request configuration values using normal property access without hasOwnProperty protections. This allows prototype-pollution gadgets (such as a polluted transformResponse function) to execute malicious code, potentially hijacking HTTP response data or stealing credentials.

Description (MITRE) cveawg.mitre.org

Pulled from cveawg.mitre.org/api/cve/CVE-2026-44495 on 2026-07-27. Shown when MITRE's text differs from the cvelistV5 mirror.

Axios is a promise based HTTP client for the browser and Node.js. From 0.19.0 to before 0.31.1 and 1.15.2, Axios contains prototype-pollution gadgets in request config processing. If another vulnerability in the same JavaScript process has already polluted Object.prototype.transformResponse, affected Axios versions may treat that inherited value as request configuration or as an option validator. Axios does not itself create the prototype pollution. Exploitability requires a separate prototype-pollution vulnerability or equivalent attacker control over Object.prototype before Axios creates a request. This vulnerability is fixed in 0.31.1 and 1.15.2.

Overview

State

—

Assigner (CNA)

—

CVSS severity

high

CVSS score

6.6 / 10

CVSS vector

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

Effective score

6.6 / 10 HIGH source: CNA overview

CWE(s)

—

Reserved

—

Published

—

Last updated

—

Source

https://www.tenable.com/cve/CVE-2026-44495

Linked Threat

CVE-2026-44495 — CVE-2026-44495

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

2026-07-27 13:18:10 UTC

NVD CVSS v3.1

7.0 / 10 HIGH source: security-advisories@github.com

NVD CVSS vector

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

Exploitability subscore

2.2 / 10

Impact subscore

4.7 / 10

EPSS score

0.0050 (probability of exploitation in next 30 days)

EPSS percentile

39.57% vs all CVEs — higher = more likely to be exploited, as of 2026-07-27

NVD-assigned CWE(s): CWE-94, 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-2026-36258

Assigner

GitHub_M

Published

Jun 11, 2026, 3:33:12 PM

Updated

Jul 31, 2026, 12:04:41 PM

EUVD base score (CVSS 3.1)

7.0 / 10
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:L/A:L

EUVD-reported EPSS

0.5000

Vendors

axios

Products

axios (1.0.0, < 1.15.2)

axios (0.19.0, < 0.31.1)

Aliases

GHSA-3g43-6gmg-66jw

ENISA description: Axios is a promise based HTTP client for the browser and Node.js. From 0.19.0 to before 0.31.1 and 1.15.2, Axios contains prototype-pollution gadgets in request config processing. If another vulnerability in the same JavaScript process has already polluted Object.prototype.transformResponse, affected Axios versions may treat that inherited value as request configuration or as an option validator. Axios does not itself create the prototype pollution. Exploitability requires a separate prototype-pollution vulnerability or equivalent attacker control over Object.prototype before Axios creates a request. This vulnerability is fixed in 0.31.1 and 1.15.2.

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-3g43-6gmg-66jw 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-2026-44495 tenable:nvd.nist.gov
• https://www.cve.org/CVERecord?id=CVE-2026-44495 tenable:www.cve.org

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

• Security Update Guide - Loading - Microsoft
  web:portal.msrc.microsoft.com

  The Security Update Guide provides information on the latest Microsoft security updates, helping users understand and address potential vulnerabilities effectively.

  2026-06-19 02:33 UTC
• June 9, 2026—KB5095051 (OS Build 28000.2269) - Microsoft Support
  web:support.microsoft.com

  Improvements This update includes new features and quality improvements that were part of the following update: May 12, 2026—KB5089548 (OS Build 28000.2113) May 26, 2026—KB5089570 (OS Build 28000.2179) This update addresses security vulnerabilities documented in the following guide: June 2026 Security Updates The following summary outlines key quality improvements addressed by this update ...

  2026-06-19 02:33 UTC
• CVE-2026-44495: axios Prototype Pollution Vulnerability Leading to ...
  web:vulert.com

  The CVE-2026-44495 vulnerability in Axios poses significant risks, including credential theft and response hijacking due to prototype pollution. It is crucial to update to the latest patched versions to mitigate these risks and ensure the security of applications using Axios.

  2026-06-19 02:33 UTC
• CVE-2026-44495 - vulnerability database | Vulners.com
  web:vulners.com

  Axios versions from 0.19.0 through before 0.31.1 and 1.15.2 contain prototype-pollution gadgets in request config processing. If another vulnerability has polluted Object.prototype.transformResponse earlier in the same JS process, the polluted val...

  2026-06-19 02:33 UTC
• May 2026 Patch Tuesday: Updates and Analysis | CrowdStrike
  web:www.crowdstrike.com

  Microsoft has released security updates for 130 vulnerabilities, including 30 critical, in its May 2026 Patch Tuesday rollout.

  2026-06-19 02:33 UTC
• Microsoft working on a fix for RoguePlanet, a flaw that grants full PC ...
  web:www.malwarebytes.com

  Microsoft says it's working on a fix for an unpatched Defender vulnerability that can give attackers the highest level of access on Windows.

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

  This Critical Patch Update contains 481 new security patches across the product families listed below. Please note that an MOS note summarizing the content of this Critical Patch Update and other Oracle Software Security Assurance activities is located at April 2026 Critical Patch Update: Executive Summary and Analysis.

  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
• Patch Tuesday - June 2026 - Rapid7
  web:www.rapid7.com

  Microsoft is publishing 200 vulnerabilities on June 2026 Patch Tuesday, including an HTTP/2 denial of service vulnerability and an elevation of privilege vulnerability in PowerToys.

  2026-06-19 02:33 UTC
• Patch Tuesday June 2026: Security Updates & CVE Analysis
  web:zecurit.com

  Get the complete breakdown of Microsoft's June 2026 Patch Tuesday. We analyze the latest security updates and all critical CVEs .

  2026-06-19 02:33 UTC

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