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CVE-2022-31150 Moderate

CRLF injection in request headers

undici is an HTTP/1.1 client, written from scratch for Node.js. It is possible to inject CRLF sequences into request headers in undici in versions less than 5.7.1. A fix was released in version 5.8.0. Sanitizing all HTTP headers from untrusted sources to eliminate `\r\n` is a workaround for this issue.

Exploit probability 1.4%
Published July 19, 2022
Required by Not available
Last source change August 12, 2026

02 / AFFECTED SOFTWARE

Affected packages

Unknown Unknown

96 explicit affected versions

npm undici

03 / CONNECTIONS

Connected vulnerabilities

04 / EVIDENCE

Source records

Open Source Vulnerabilities CVE-2022-31150

undici is an HTTP/1.1 client, written from scratch for Node.js. It is possible to inject CRLF sequences into request headers in undici in versions less than 5.7.1. A fix was released in version 5.8.0. Sanitizing all HTTP headers from untrusted sources to eliminate `\r\n` is a workaround for this issue.

View original source
Open Source Vulnerabilities GHSA-3cvr-822r-rqcc

### Impact It is possible to inject CRLF sequences into request headers in Undici. ```js const undici = require('undici') const response = undici.request("http://127.0.0.1:1000", { headers: {'a': "\r\nb"} }) ``` The same applies to `path` and `method` ### Patches Update to v5.8.0 ### Workarounds Sanitize all HTTP headers from untrusted sources to eliminate `\r\n`. ### References https://hackerone.com/reports/409943 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-12116 ### For more information If you have any questions or comments about this advisory: * Open an issue in [undici repository](https://github.com/nodejs/undici/issues) * To make a report, follow the [SECURITY](https://github.com/nodejs/node/blob/HEAD/SECURITY.md) document

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05 / REFERENCES

Further evidence