CVE-2026-29518 Rsync < 3.4.3 TOCTOU Race Condition Allows Symlink-Based Arbitrary File Write

Rsync versions before 3.4.3 contain a time-of-check to time-of-use TOCTOU race condition in daemon file handling that allows attackers to redirect file writes outside intended directories by replacing parent directory components with symbolic links. Attackers with write access to a module path ca...

PT-2026-42153

Name of the Vulnerable Software and Affected Versions rsync versions prior to 3.4.3 Description A time-of-check to time-of-use TOCTOU race condition exists in the daemon file handling. This occurs when an rsync daemon is configured with the chroot setting set to false. A local attacker with write...