Vulnerability · Published Aug 4, 2026 · Assigned by hackerone
CVE-2026-58044
Low 3.7
In plain English
A low-severity security flaw in node from nodejs. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 19% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.0)3.7Low
Exploit odds (30 days)0.3%top 80.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack tooling1Public PoC
Official description
A flaw in Node.js HTTP client can cause a request desynchronization for Node.js-based forwarding proxies that rebuild outbound headers from the visible `IncomingMessage` headers while piping the original body to a reused backend connection. Node.js can omit headers beyond `maxHeadersCount` / `maxHeaderPairs` from `req.headers`, `req.rawHeaders`, and `req.headersDistinct`, while still using those omitted headers internally for HTTP message framing. In particular, `Content-Length` can be hidden from userland while the request body is still delivered. This vulnerability affects all supported release lines: **Node.js 22**, **Node.js 24**, and **Node.js 26**.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| AlmaLinux:10 | nodejs | 1:22.23.2-1.el10_2 | ALSA-2026:61376 |
| AlmaLinux:8 | nodejs | 1:24.19.0-1.module_el8.10.0+4268+8e07aa5a | ALSA-2026:62583 |
| AlmaLinux:8 | nodejs | 1:22.23.2-1.module_el8.10.0+4265+75d28086 | ALSA-2026:62219 |
| AlmaLinux:9 | nodejs | 1:24.19.0-1.module_el9.8.0+301+084fac05 | ALSA-2026:61386 |
| AlmaLinux:9 | nodejs | 1:22.23.2-1.module_el9.8.0+302+959ebcd4 | ALSA-2026:61383 |
| AlmaLinux:10 | nodejs-devel | 1:22.23.2-1.el10_2 | ALSA-2026:61376 |
| AlmaLinux:8 | nodejs-devel | 1:22.23.2-1.module_el8.10.0+4265+75d28086 | ALSA-2026:62219 |
| AlmaLinux:8 | nodejs-devel | 1:24.19.0-1.module_el8.10.0+4268+8e07aa5a | ALSA-2026:62583 |
| AlmaLinux:9 | nodejs-devel | 1:22.23.2-1.module_el9.8.0+302+959ebcd4 | ALSA-2026:61383 |
| AlmaLinux:9 | nodejs-devel | 1:24.19.0-1.module_el9.8.0+301+084fac05 | ALSA-2026:61386 |
| AlmaLinux:10 | nodejs-docs | 1:22.23.2-1.el10_2 | ALSA-2026:61376 |
| AlmaLinux:8 | nodejs-docs | 1:24.19.0-1.module_el8.10.0+4268+8e07aa5a | ALSA-2026:62583 |
| AlmaLinux:8 | nodejs-docs | 1:22.23.2-1.module_el8.10.0+4265+75d28086 | ALSA-2026:62219 |
| AlmaLinux:9 | nodejs-docs | 1:22.23.2-1.module_el9.8.0+302+959ebcd4 | ALSA-2026:61383 |
| AlmaLinux:9 | nodejs-docs | 1:24.19.0-1.module_el9.8.0+301+084fac05 | ALSA-2026:61386 |
| AlmaLinux:10 | nodejs-full-i18n | 1:22.23.2-1.el10_2 | ALSA-2026:61376 |
| AlmaLinux:8 | nodejs-full-i18n | 1:24.19.0-1.module_el8.10.0+4268+8e07aa5a | ALSA-2026:62583 |
| AlmaLinux:8 | nodejs-full-i18n | 1:22.23.2-1.module_el8.10.0+4265+75d28086 | ALSA-2026:62219 |
| AlmaLinux:9 | nodejs-full-i18n | 1:22.23.2-1.module_el9.8.0+302+959ebcd4 | ALSA-2026:61383 |
| AlmaLinux:9 | nodejs-full-i18n | 1:24.19.0-1.module_el9.8.0+301+084fac05 | ALSA-2026:61386 |
| AlmaLinux:10 | nodejs-libs | 1:22.23.2-1.el10_2 | ALSA-2026:61376 |
| AlmaLinux:8 | nodejs-libs | 1:24.19.0-1.module_el8.10.0+4268+8e07aa5a | ALSA-2026:62583 |
| AlmaLinux:8 | nodejs-libs | 1:22.23.2-1.module_el8.10.0+4265+75d28086 | ALSA-2026:62219 |
| AlmaLinux:9 | nodejs-libs | 1:24.19.0-1.module_el9.8.0+301+084fac05 | ALSA-2026:61386 |
| AlmaLinux:9 | nodejs-libs | 1:22.23.2-1.module_el9.8.0+302+959ebcd4 | ALSA-2026:61383 |
| AlmaLinux:8 | nodejs-nodemon | 3.1.14-2.module_el8.10.0+4250+09238ed4 | ALSA-2026:62583 |
| AlmaLinux:8 | nodejs-nodemon | 3.1.14-2.module_el8.10.0+4252+aedd4c30 | ALSA-2026:62219 |
| AlmaLinux:9 | nodejs-nodemon | 3.1.14-3.module_el9.8.0+292+f4eaf8b2 | ALSA-2026:61386 |
| AlmaLinux:9 | nodejs-nodemon | 3.1.14-2.module_el9.8.0+291+0bb98cce | ALSA-2026:61383 |
| AlmaLinux:10 | nodejs-npm | 1:10.9.8-1.22.23.2.1.el10_2 | ALSA-2026:61376 |
| AlmaLinux:8 | nodejs-packaging | 2021.06-6.module_el8.10.0+4158+e796f37f | ALSA-2026:62219 |
| AlmaLinux:8 | nodejs-packaging | 2021.06-6.module_el8.10.0+4086+70facd4a | ALSA-2026:62583 |
| AlmaLinux:9 | nodejs-packaging | 2021.06-6.module_el9.7.0+209+ecf6523e | ALSA-2026:61386 |
| AlmaLinux:9 | nodejs-packaging | 2021.06-6.module_el9.7.0+227+12323393 | ALSA-2026:61383 |
| AlmaLinux:8 | nodejs-packaging-bundler | 2021.06-6.module_el8.10.0+4086+70facd4a | ALSA-2026:62583 |
| AlmaLinux:8 | nodejs-packaging-bundler | 2021.06-6.module_el8.10.0+4158+e796f37f | ALSA-2026:62219 |
| AlmaLinux:9 | nodejs-packaging-bundler | 2021.06-6.module_el9.7.0+209+ecf6523e | ALSA-2026:61386 |
| AlmaLinux:9 | nodejs-packaging-bundler | 2021.06-6.module_el9.7.0+227+12323393 | ALSA-2026:61383 |
| AlmaLinux:10 | nodejs24 | 1:24.19.0-1.el10_2 | ALSA-2026:61377 |
| AlmaLinux:10 | nodejs24-devel | 1:24.19.0-1.el10_2 | ALSA-2026:61377 |
| AlmaLinux:10 | nodejs24-docs | 1:24.19.0-1.el10_2 | ALSA-2026:61377 |
| AlmaLinux:10 | nodejs24-full-i18n | 1:24.19.0-1.el10_2 | ALSA-2026:61377 |
| AlmaLinux:10 | nodejs24-libs | 1:24.19.0-1.el10_2 | ALSA-2026:61377 |
| AlmaLinux:10 | nodejs24-npm | 1:11.17.0-1.24.19.0.1.el10_2 | ALSA-2026:61377 |
| AlmaLinux:8 | npm | 1:10.9.8-1.22.23.2.1.module_el8.10.0+4265+75d28086 | ALSA-2026:62219 |
| AlmaLinux:8 | npm | 1:11.17.0-1.24.19.0.1.module_el8.10.0+4268+8e07aa5a | ALSA-2026:62583 |
| AlmaLinux:9 | npm | 1:11.17.0-1.24.19.0.1.module_el9.8.0+301+084fac05 | ALSA-2026:61386 |
| AlmaLinux:9 | npm | 1:10.9.8-1.22.23.2.1.module_el9.8.0+302+959ebcd4 | ALSA-2026:61383 |
| AlmaLinux:8 | v8-12.4-devel | 3:12.4.254.21-1.22.23.2.1.module_el8.10.0+4265+75d28086 | ALSA-2026:62219 |
| AlmaLinux:9 | v8-12.4-devel | 3:12.4.254.21-1.22.23.2.1.module_el9.8.0+302+959ebcd4 | ALSA-2026:61383 |
| AlmaLinux:8 | v8-13.6-devel | 3:13.6.233.17-1.24.19.0.1.module_el8.10.0+4268+8e07aa5a | ALSA-2026:62583 |
| AlmaLinux:9 | v8-13.6-devel | 3:13.6.233.17-1.24.19.0.1.module_el9.8.0+301+084fac05 | ALSA-2026:61386 |
| Alpine:v3.21 | nodejs | 22.23.2-r0 | ALPINE-CVE-2026-58044 |
| Alpine:v3.22 | nodejs | 22.23.2-r0 | ALPINE-CVE-2026-58044 |
| Alpine:v3.23 | nodejs | 24.18.1-r0 | ALPINE-CVE-2026-58044 |
| Alpine:v3.24 | nodejs | 24.18.1-r0 | ALPINE-CVE-2026-58044 |
| Alpine:v3.24 | nodejs-current | 26.5.1-r0 | ALPINE-CVE-2026-58044 |
| Debian:12 | nodejs | no fix listed | DEBIAN-CVE-2026-58044 |
| Debian:13 | nodejs | no fix listed | DEBIAN-CVE-2026-58044 |
| Debian:14 | nodejs | 24.19.0+dfsg+~cs24.13.3-1 | DEBIAN-CVE-2026-58044 |
| Ubuntu:24.04:LTS | nodejs | no fix listed | UBUNTU-CVE-2026-58044 |
| Ubuntu:26.04:LTS | nodejs | no fix listed | UBUNTU-CVE-2026-58044 |
| Ubuntu:26.10 | nodejs | no fix listed | UBUNTU-CVE-2026-58044 |
Affected products (as reported)
Weakness: CWE-444 · Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N