CVE-2026-1527
undici is vulnerable to CRLF Injection via upgrade option
概要
undici is vulnerable to CRLF Injection via upgrade option
原文の説明
取得元が公開している説明をそのまま載せています (多くは英語)。
ImpactWhen an application passes user-controlled input to the upgrade option of client.request(), an attacker can inject CRLF sequences (\r\n) to:
- Inject arbitrary HTTP headers
- Terminate the HTTP request prematurely and smuggle raw data to non-HTTP services (Redis, Memcached, Elasticsearch)
The vulnerability exists because undici writes the upgrade value directly to the socket without validating for invalid header characters:
// lib/dispatcher/client-h1.js:1121
if (upgrade) {
header += connection: upgrade\r\nupgrade: ${upgrade}\r\n
}
出典: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV
ディストリビューション別の修正状況
各ディストリビューションが公開している、この CVE の修正パッケージ
- BellSoft Alpaquita BELL-CVE-2026-1527 nodejs 修正版: 20.20.2-r0
- Debian DEBIAN-CVE-2026-1527 node-undici
- Ubuntu UBUNTU-CVE-2026-1527 node-undici
参照URL
- advisory cna.openjsf.org
- advisory github.com
- advisory github.com
- advisory nvd.nist.gov
- web github.com
- web hackerone.com