CVE-2022-31150 | CRLF injection in request headers

Exp

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.

Published: 2022-07-19 Last update: 2024-11-21 Assigner: [email protected] Source: [email protected]
NVD Status：Modified，CVE State: published
View at NVD, CVE.org, EUVD

CVE-2022-31150 is rated High Exploit Risk (60/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.54%). 2 public exploit reference(s) are indexed (Exploit-DB). Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2022-31150

EDB-ID Source Kind Published Link
— nvd_ref exploit_tag Exploit-DB ↗
— nvd_ref exploit_tag Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2022-31150

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

# Date Old EPSS score New EPSS score Delta (New - Old)
1 2026-03-04 0.30% 0.54% +0.24%
2 2026-03-01 0.54% 0.30% -0.24%
3 2026-02-04 — 0.54% —

Full EPSS history (35 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2022-31150

CVSS metrics for this CVE.

Base score Version Severity Vector Exploitability Impact Score source
5.3 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:N)
Doesn’t really leak secrets in a meaningful way.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 1.4 [email protected]
6.5 3.1 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N Click to expand
Attack vector (AV:N)
Could be attacked over the internet or any normal routed network—not just someone sitting at the machine.
Attack complexity (AC:L)
Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup.
Privileges required (PR:N)
No account or special rights needed—anonymous or random user is enough.
User interaction (UI:N)
Nobody has to click “OK” or open a trap file; it can work without a victim helping.
Scope (S:U)
Damage stays in the same “trust bubble” as the broken component—no big spill into unrelated systems.
Confidentiality (C:L)
Some sensitive info could get out, but not a total data dump.
Integrity (I:L)
Attackers could change some data, but it’s limited—not everything goes.
Availability (A:N)
Service keeps running; no real outage angle.
 3.9 2.5 [email protected]

Weakness enumeration for CVE-2022-31150

GitHub Security Advisory for CVE-2022-31150

GHSA-3cvr-822r-rqcc · Severity: medium · Ecosystem: npm — undici before v5.8.0 vulnerable to CRLF injection in request headers

OS Trackers for CVE-2022-31150

vendor priority summary link
debian not yet assigned CVE-2022-31150 not yet assigned priority: Debian including 1 source packages (node-undici), 4 status rows across 4 suites (bookworm, forky, sid, trixie): resolved 4. https://security-tracker.debian.org/tracker/CVE-2022-31150
redhat medium — https://access.redhat.com/security/cve/CVE-2022-31150
suse medium CVE-2022-31150 severity moderate: SUSE including 20 source package names (16-7.1:nodejs16-16.17.0-150400.3.6.1, 16-7.1:npm16-16.17.0-150400.3.6.1, …), 47 product×package rows across 11 product lines (Container bci/nodejs, SUSE Linux Enterprise Module for Open Buildservice Development Tools 15 SP5, … (11 product lines)): Fixed 47. https://www.suse.com/security/cve/CVE-2022-31150/
ubuntu medium CVE-2022-31150 medium priority: Ubuntu including 1 source packages (node-undici), 13 status rows across 13 suites (bionic, focal, jammy, kinetic, lunar, mantic, noble, oracular, plucky, questing, trusty, upstream, xenial): DNE 5, ignored 5, needs-triage 3. https://ubuntu.com/security/CVE-2022-31150

Affected software / configurations for CVE-2022-31150

Vendor Product Version Raw CPE
nodejs undici < 5.8.0 cpe:2.3:a:nodejs:undici:*:*:*:*:*:node.js:*:*

References for CVE-2022-31150

cvelogic Threat Intelligence