CRLF Injection Affecting axios package, versions >=1.3.0 <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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Test your applications- Snyk IDSNYK-JS-AXIOS-16299819
- published26 Apr 2026
- disclosed24 Apr 2026
- creditkobi-s
Introduced: 24 Apr 2026
CVE-2026-42037 (opens in a new tab)How to fix?
Upgrade axios to version 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 CRLF Injection through the FormDataPart multipart header construction in the form-data streaming helper. An attacker can inject arbitrary multipart headers by supplying a Blob-like value whose type contains \r or \n, causing the generated Content-Type line to break and append attacker-controlled header fields. This lets a crafted upload alter the multipart body sent by the application, which can corrupt downstream request parsing and expose or tamper with data handled by the receiving server.