CVE-2026-53803 — rsync < 3.5.0 Symlink Following Arbitrary File Overwrite
rsync before 3.5.0 contains a symlink following vulnerability that allows local attackers to overwrite arbitrary files by placing a symlink at a predictable output path such as …
Published: 2026-08-13 · CVSS: 8.5 · CVSS 4.0
rsync before 3.5.0 contains a symlink following vulnerability that allows local attackers to overwrite arbitrary files by placing a symlink at a predictable output path such as --log-file, --write-batch, or daemon-mode log and statistics paths. Attackers can exploit rsync's failure to reject symlinks during ancillary file writes to redirect output to arbitrary filesystem locations, achieving local privilege escalation on installations where rsync runs with elevated privileges such as setuid or privileged daemon configurations.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7