---
id: CVE-2026-101909
title: Axios is a promise-based HTTP client for the browser and Node.js
summary: >-
  Axios is a promise-based HTTP client for the browser and Node.js. From 0.28.0
  until 0.34.0 and 1.15.1 until 1.20.0, ToFormData processes inherited
  serialization options and visitor properties supplied through prototype
  pollution. A separ…
severity: high
cvss: 8.3
cvssVector: 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N'
cwe:
  - CWE-1321
vendor: axios
product: axios
affected:
  - 'axios >= 1.15.1, < 1.20.0'
  - 'axios >= 0.28.0, < 0.34.0'
published: '2026-09-28'
updated: '2026-09-28'
sourceUpdated: '2026-09-28T18:17:19.680'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-101909'
references:
  - url: >-
      https://github.com/axios/axios/commit/d19040bda7a8be2f82c3c6e1a5bc03917daee39a
    label: security-advisories@github.com
  - url: >-
      https://github.com/axios/axios/commit/d29be181f85f6fe93397a07b1f69606d9622637b
    label: security-advisories@github.com
  - url: 'https://github.com/axios/axios/pull/11141'
    label: security-advisories@github.com
  - url: 'https://github.com/axios/axios/releases/tag/v0.34.0'
    label: security-advisories@github.com
  - url: 'https://github.com/axios/axios/releases/tag/v1.20.0'
    label: security-advisories@github.com
  - url: 'https://github.com/axios/axios/security/advisories/GHSA-x97p-jq2g-jp4f'
    label: security-advisories@github.com
tags:
  - nvd
  - cve.org
cvssSource: cna
ingestedAt: '2026-09-28T18:17:54.308Z'
---

## Overview

Axios is a promise-based HTTP client for the browser and Node.js. From 0.28.0 until 0.34.0 and 1.15.1 until 1.20.0, ToFormData processes inherited serialization options and visitor properties supplied through prototype pollution. A separate same-process prototype-pollution flaw supplies inherited dots, indexes, metaTokens, maxDepth, visitor, or Blob values before object serialization. The inherited options alter toFormData field naming and data interpretation, maxDepth can force request failure, Blob changes value handling, and a polluted visitor can execute when an attacker already has the stronger ability to inject a function. Serialized field naming and data interpretation can change, maxDepth can cause request failure, Blob can alter value handling, and a polluted visitor can execute under the stronger function-injection primitive. This issue is fixed in versions 0.34.0 and 1.20.0.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.