CVE-2026-53798 — rsync < 3.5.0 Privilege Confusion via name-converter uid/gid mapping
rsync before 3.5.0 contains a privilege confusion vulnerability in the name-converter subprocess uid/gid mapping that allows local attackers to cause transferred files to be own…
Published: 2026-08-13 · CVSS: 6.9 · CVSS 4.0
rsync before 3.5.0 contains a privilege confusion vulnerability in the name-converter subprocess uid/gid mapping that allows local attackers to cause transferred files to be owned by root by influencing name-converter responses to return empty values. When the name-converter subprocess returns an empty response for a uid or gid lookup, rsync incorrectly interprets it as a successful resolution to uid/gid 0 (root) rather than a lookup failure, and if the name-converter also signals fake super-user status, rsync proceeds with root ownership assignments for transferred files.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7