Uncontrolled Recursion Affecting axios package, versions >=0.28.0 <0.33.0>=1.0.0 <1.18.0


Severity

Recommended
0.0
medium
0
10

CVSS assessment by Snyk's Security Team. Learn more

Threat Intelligence

Exploit Maturity
Proof of Concept

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  • Snyk IDSNYK-JS-AXIOS-18060167
  • published21 Jul 2026
  • disclosed20 Jul 2026
  • creditcleverlabs

Introduced: 20 Jul 2026

New CVE NOT AVAILABLE CWE-674  (opens in a new tab)

How to fix?

Upgrade axios to version 0.33.0, 1.18.0 or higher.

Overview

axios is a promise-based HTTP client for the browser and Node.js.

Affected versions of this package are vulnerable to Uncontrolled Recursion in the buildPath() function of lib/helpers/formDataToJSON.js, which recurses once per FormData key path segment without enforcing a maximum depth. An attacker can crash the process by supplying a FormData field name with thousands of nested bracket segments, such as a[x][x][x]..., which drives formDataToJSON() into recursion that exhausts the JavaScript call stack with a RangeError. Exploitation requires the application to process untrusted FormData through formToJSON() or by sending it with a JSON content type.

CVSS Base Scores

version 4.0
version 3.1