CVE-2026-53796 — rsync < 3.5.0 TOCTOU Race Condition via Destination Directory Handling
rsync before 3.5.0 contains a time-of-check to time-of-use (TOCTOU) race condition vulnerability in the non-daemon receiver's destination directory handling that allows an attac…
Published: 2026-08-13 · CVSS: 5.8 · CVSS 4.0
rsync before 3.5.0 contains a time-of-check to time-of-use (TOCTOU) race condition vulnerability in the non-daemon receiver's destination directory handling that allows an attacker who can manipulate destination path parent components to redirect file writes to unintended locations. Attackers can substitute a symlink for a component of the destination path between the path resolution and chdir() call, causing the receiver's working directory to be established outside the intended destination tree so that subsequent relative-path file writes land in unintended filesystem locations.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7