Axios up to 1.15.0 Content-Type Header formDataToStream.js crlf injection

Summaryinfo

A vulnerability categorized as problematic has been discovered in Axios up to 1.15.0. Affected by this issue is some unknown functionality in the library lib/helpers/formDataToStream.js of the component Content-Type Header Handler. The manipulation results in crlf injection. This vulnerability is cataloged as CVE-2026-42037. The attack may be launched remotely. There is no exploit available. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability classified as problematic has been found in Axios up to 1.15.0. Affected is an unknown functionality in the library lib/helpers/formDataToStream.js of the component Content-Type Header Handler. The manipulation with an unknown input leads to a crlf injection vulnerability. CWE is classifying the issue as CWE-93. The product uses CRLF (carriage return line feeds) as a special element, e.g. to separate lines or records, but it does not neutralize or incorrectly neutralizes CRLF sequences from inputs. This is going to have an impact on integrity. CVE summarizes:

Axios is a promise based HTTP client for the browser and Node.js. From 1.0.0 to before 1.15.1, the FormDataPart constructor in lib/helpers/formDataToStream.js interpolates value.type directly into the Content-Type header of each multipart part without sanitizing CRLF (\r\n) sequences. An attacker who controls the .type property of a Blob/File-like object (e.g., via a user-uploaded file in a Node.js proxy service) can inject arbitrary MIME part headers into the multipart form-data body. This bypasses Node.js v18+ built-in header protections because the injection targets the multipart body structure, not HTTP request headers. This vulnerability is fixed in 1.15.1.

The advisory is available at github.com. This vulnerability is traded as CVE-2026-42037 since 04/23/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 313223 (Node.js Module axios < 1.15.1 CRLF Injection (CVE-2026-42037)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 1.15.1 eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (313223) and CERT Bund (WID-SEC-2026-1687). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

• IBM License Metric Tool

Productinfo

Name

• Axios

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4
• 1.5
• 1.6
• 1.7
• 1.8
• 1.9
• 1.10
• 1.11
• 1.12
• 1.13
• 1.14
• 1.15.0

Website

• Product: https://github.com/axios/axios/

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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