Uncontrolled Recursion Affecting axios package, versions <0.31.1>=1.0.0 <1.15.1
Threat Intelligence
Snyk has a proof-of-concept or detailed explanation of how to exploit this vulnerability.
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-JS-AXIOS-16299923
- published26 Apr 2026
- disclosed24 Apr 2026
- creditfg0x0
Introduced: 24 Apr 2026
CVE-2026-42039 (opens in a new tab)How to fix?
Upgrade axios to version 0.31.1, 1.15.1 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 through the toFormData recursive serializer in lib/helpers/toFormData.js. An attacker can crash a process by supplying a deeply nested object as request data or params, causing unbounded recursion and a call-stack overflow during multipart/form-data or query-string serialization.