High · published August 13, 2026
rsync before 3.5.0 contains an arbitrary file write vulnerability that allows attackers to write files outside the intended destination tree by specifying an absolute path via --temp-dir or --link-dest options. The rename-confinement logic is bypassed when these options resolve to paths outside the destination tree, enabling attacker-controlled values to write files to arbitrary locations accessible to the rsync process.
| Product | Versions | Fixed in |
|---|---|---|
| samba/rsync | < 3.5.0 | 3.5.0 |