Inconsistent interpretation of HTTP requests in Node.js - CVE-2026-58044

Vulnerability identifier: #VU140048

CSH Severity: Medium

CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-58044

CWE-ID: CWE-444

Exploitation vector: Remote access

Exploit availability: No public exploit available

The vulnerability allows a remote attacker to perform request smuggling.

The vulnerability exists due to inconsistent header processing in the Node.js HTTP client when rebuilding outbound headers from visible IncomingMessage headers while piping the original body to a reused backend connection. A remote attacker can send a crafted request with hidden framing headers to perform request smuggling.

The issue affects Node.js-based forwarding proxies that rebuild outbound headers from visible IncomingMessage headers while reusing backend connections.

Node.js
SUSE Linux Enterprise Server 15 SP6
SUSE Linux Enterprise Server 15
SUSE Linux Enterprise Server for SAP Applications 15
Web and Scripting Module
openSUSE Leap
nodejs22-docs
nodejs22-devel
npm22
corepack22
nodejs22
nodejs22-debugsource
nodejs22-debuginfo
nodejs24-devel
nodejs24-debuginfo
nodejs24-debugsource
nodejs24
npm24
nodejs24-docs

Install security update from vendor's website.

Node.js - addressed in versions 22.23.2, 24.18.1, 26.5.1
nodejs22-docs - addressed in versions 22.23.2-150600.13.24.1, 22.23.2-150700.3.18.1
nodejs22-devel - addressed in versions 22.23.2-150600.13.24.1, 22.23.2-150700.3.18.1
npm22 - addressed in versions 22.23.2-150600.13.24.1, 22.23.2-150700.3.18.1
corepack22 - update to 22.23.2-150600.13.24.1
nodejs22 - addressed in versions 22.23.2-150600.13.24.1, 22.23.2-150700.3.18.1
nodejs22-debugsource - addressed in versions 22.23.2-150600.13.24.1, 22.23.2-150700.3.18.1
nodejs22-debuginfo - addressed in versions 22.23.2-150600.13.24.1, 22.23.2-150700.3.18.1
nodejs24-devel - update to 24.18.1-150700.15.16.1
nodejs24-debuginfo - update to 24.18.1-150700.15.16.1
nodejs24-debugsource - update to 24.18.1-150700.15.16.1
nodejs24 - update to 24.18.1-150700.15.16.1
npm24 - update to 24.18.1-150700.15.16.1
nodejs24-docs - update to 24.18.1-150700.15.16.1

• https://nodejs.org/en/blog/vulnerability/july-2026-security-releases

• Multiple vulnerabilities in Node.js
• SUSE update for nodejs24
• SUSE update for nodejs22
• SUSE update for nodejs22