CVE-2026-48932
Fixed in a distro release EPSS <1%CVSS 3.7
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**.
Products: NodeJS Node
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| Chainguard | nodejs-20 | no fix |
| Chainguard | nodejs-25 | no fix |
| Debian 12 | nodejs | no fix |
| Debian 13 | nodejs | no fix |
| Debian 14 | nodejs | 24.19.0+dfsg+~cs24.13.3-1 |
| Red Hat hummingbird 1 | nodejs22 | 0:22.23.2-2.3.2.hum1 |
| Red Hat hummingbird 1 | nodejs22-bin | 0:22.23.2-2.3.2.hum1 |
| Red Hat hummingbird 1 | nodejs22-devel | 0:22.23.2-2.3.2.hum1 |
| Red Hat hummingbird 1 | nodejs22-docs | 0:22.23.2-2.3.2.hum1 |
| Red Hat hummingbird 1 | nodejs22-full-i18n | 0:22.23.2-2.3.2.hum1 |
| Red Hat hummingbird 1 | nodejs22-libs | 0:22.23.2-2.3.2.hum1 |
| Red Hat hummingbird 1 | nodejs22-npm | 0:10.9.8-1.22.23.2.2.3.2.hum1 |
| Red Hat hummingbird 1 | nodejs22-npm-bin | 0:22.23.2-2.3.2.hum1 |
| Red Hat hummingbird 1 | nodejs24 | 0:24.18.1-0.2.2.hum1 |
| Red Hat hummingbird 1 | nodejs24-bin | 0:24.18.1-0.2.2.hum1 |
| Red Hat hummingbird 1 | nodejs24-devel | 0:24.18.1-0.2.2.hum1 |
| Red Hat hummingbird 1 | nodejs24-docs | 0:24.18.1-0.2.2.hum1 |
| Red Hat hummingbird 1 | nodejs24-full-i18n | 0:24.18.1-0.2.2.hum1 |
| Red Hat hummingbird 1 | nodejs24-libs | 0:24.18.1-0.2.2.hum1 |
| Red Hat hummingbird 1 | nodejs24-npm | 0:11.16.0-1.24.18.1.0.2.2.hum1 |
| Red Hat hummingbird 1 | nodejs24-npm-bin | 0:24.18.1-0.2.2.hum1 |
| Red Hat hummingbird 1 | nodejs26 | 0:26.7.0-1.5.2.hum1 |
| Red Hat hummingbird 1 | nodejs26-bin | 0:26.7.0-1.5.2.hum1 |
| Red Hat hummingbird 1 | nodejs26-devel | 0:26.7.0-1.5.2.hum1 |
| Red Hat hummingbird 1 | nodejs26-docs | 0:26.7.0-1.5.2.hum1 |
| Red Hat hummingbird 1 | nodejs26-full-i18n | 0:26.7.0-1.5.2.hum1 |
| Red Hat hummingbird 1 | nodejs26-libs | 0:26.7.0-1.5.2.hum1 |
| Red Hat hummingbird 1 | nodejs26-npm | 0:11.19.0-1.26.7.0.1.5.2.hum1 |
| Red Hat hummingbird 1 | nodejs26-npm-bin | 0:26.7.0-1.5.2.hum1 |
| Red Hat hummingbird 1 | v8-12.4-devel | 0:12.4.254.21-1.22.23.2.2.3.2.hum1 |
| Red Hat hummingbird 1 | v8-14.6-devel | 0:14.6.202.34-1.26.7.0.1.5.2.hum1 |
| Ubuntu 24.04 LTS | nodejs | no fix |
| Ubuntu 26.04 LTS | nodejs | no fix |
| Ubuntu 26.10 | nodejs | no fix |
| Ubuntu Pro 14.04 LTS | nodejs | no fix |
| Ubuntu Pro 16.04 LTS | nodejs | no fix |
| Ubuntu Pro 18.04 LTS | nodejs | no fix |
| Ubuntu Pro 20.04 LTS | nodejs | no fix |
| Ubuntu Pro 22.04 LTS | nodejs | no fix |
| Wolfi | nodejs-20 | no fix |
| Wolfi | nodejs-25 | no fix |