CVE-2026-53790

NameCVE-2026-53790
Descriptionrsync before 3.5.0 contains multiple command and argument injection vulnerabilities that allow attackers to execute arbitrary commands by supplying malicious input through several code paths, including the RSYNC_CONNECT_PROG environment variable, daemon hooks, the rsync-ssl wrapper, and remote-shell command newline injection. Attackers can inject shell metacharacters or newline characters into unsanitized user-supplied values such as hostnames and hostspecs to execute arbitrary commands under the privileges of the rsync process or the invoking user.
SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
rsync (PTS)bookworm3.2.7-1+deb12u6vulnerable
bookworm (security)3.2.7-1+deb12u5vulnerable
trixie3.4.1+ds1-5+deb13u4vulnerable
trixie (security)3.4.1+ds1-5+deb13u3vulnerable
forky, sid3.5.0+ds1-2fixed

The information below is based on the following data on fixed versions.

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
rsyncsource(unstable)3.5.0+ds1-1

Notes

https://download.samba.org/pub/rsync/NEWS#3.5.0

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