CVE-2022-31150 — undici is an HTTP/1

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 wor

01What is this vulnerability?

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.

02Affected products

Vendor	Product	Versions
nodejs	undici	< v5.7.1, >= v5.8.0

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2022-07-19T20:40:10.000Z
• Last modified: 2025-04-22T17:48:45.328Z

09References

• github.com — https://github.com/nodejs/undici/security/advisories/GHSA-3cvr-822r-rqcc
• hackerone.com — https://hackerone.com/reports/409943
• github.com — https://github.com/nodejs/undici/releases/tag/v5.8.0
• security.netapp.com — https://security.netapp.com/advisory/ntap-20220915-0002/