CVE-2026-53791rsync < 3.5.0 Daemon IP Spoofing via PROXY Protocol Header

Beschreibung

rsync daemon before 3.5.0 contains an IP address spoofing vulnerability that allows unauthenticated remote attackers to bypass IP-based access controls by sending a crafted PROXY protocol header with a forged source address. Attackers who can connect directly to the rsync daemon can inject a spoofed source IP in the PROXY protocol header to circumvent hosts allow/deny rules, gaining unauthorized access that would otherwise be blocked based on their real source address.

Daten: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Wiedergegeben wie in der Quelle, auf Englisch.

Betroffene Produkte und Versionen

Referenzen und Patches

• GitHub Security Advisory (GHSA-h2q9-5fr8-w635) vendor-advisoryVendor Advisory
• rsync 3.5.0 Release Notes release-notesProductRelease Notes
• https://www.vulncheck.com/advisories/rsync-daemon-ip-spoofing-via-proxy-protocol-header third-party-advisoryRelease NotesThird Party Advisory