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Fencer Vulns
medium 5.3

CVE-2022-31150 json

CRLF injection in request headers

published 2022-07-19 4 y ago modified 2026-06-17 4 mo ago also GHSA-3cvr-822r-rqcc , EUVD-2022-6216

cvss
5.3
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.5%
EPSS 1.5% chance of exploitation in 30 days, percentile 74%
public exploits
0
none known

Summary

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.

Patch / fix

  • npm undici 5.8.0
  • nodejs undici 5.8.0
  • node-undici Debian 14, Debian 13, Debian 12 5.8.0+dfsg1+~cs18.9.16-1

debian advisories DEBIAN-CVE-2022-31150

  • nodejs16 SLE Module for Web and Scripting 15 SP3, openSUSE Leap 15.3 16.17.0-150300.7.9.1
  • nodejs16 SLE Module for Web and Scripting 15 SP4, openSUSE Leap 15.4 16.17.0-150400.3.6.1
  • nodejs16 SLE Module for Web and Scripting 12 16.17.0-8.9.1

suse advisories SUSE-SU-2022:3251-1SUSE-SU-2022:3250-1SUSE-SU-2022:3196-1

  • nodejs16 openSUSE Tumbleweed 16.17.0-2.1

opensuse advisories openSUSE-SU-2024:12285-1

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2022-31150 updated cvss 6.5

nodejs16: CRLF injection in node-undici

  • Red Hat Advanced Cluster Management for Kubernetes 2 rhacm2/search-ui-rhel8 Red Hat OpenShift Dev Spaces devspaces/dashboard-rhel8
    affected: no fix available

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
yes
Technical impact
partial
Assessed
18 mo ago

Exploit prediction

1.52% chance of exploitation in the next 30 days, higher than 74% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

  • github.com https://github.com/nodejs/undici/security/advisories/GHSA-3cvr-822r-rqcc referenced PoC, tagged "exploit" by a source, unverified
  • hackerone.com https://hackerone.com/reports/409943 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
NVD 3.1 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
GitHub 3.1 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Affected packages

ecosystem package affected fixed in
npm undici
<5.8.0
5.8.0

Affected products

  • nodejs undici

Classification

Weakness
  • CWE-93 Improper Neutralization of CRLF Sequences

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.