rsync before 3.5.0 contains a path traversal vulnerability that allows remote clients to access files outside the intended module root when use chroot is disabled and the module root path or a component of it is a symlink. The daemon calls chdir() to the module root at session initialization without resolving symlinks via realpath() or equivalent, causing subsequent relative-path operations to reference files relative to the symlink target rather than the intended module root, enabling unauthorized file access.
CVSS Details
- CVSS 4.0 Base Score: 8.4 (HIGH)
- CVSS 4.0 Vector: (CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X)
- CVSS 3.1 Base Score: 7.1
- CVSS 3.1 Vector: (CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade rsyncUpgrade rsync-daemonUpgrade rsync-rrsync | Oct 11, 2026 | Sep 14, 2026 |
| Alpine Linux | — | Upgrade rsync | Sep 1, 2026 | Aug 13, 2026 |
| Amazon_linux_2023 | — | Upgrade rsync-debugsourceUpgrade rsync-debuginfoUpgrade rsync-daemonUpgrade rsync | Sep 30, 2026 | Aug 13, 2026 |
| Debian | — | Upgrade rsync | Sep 30, 2026 | Aug 13, 2026 |
| Freebsd | — | Upgrade rsync | Aug 27, 2026 | Aug 25, 2026 |
| Oracle_linux | — | Upgrade rsync-daemonUpgrade rsync-rrsyncUpgrade rsync | Oct 22, 2026 | Aug 13, 2026 |
| Redhat Openshift | — | Upgrade ose-rhel-coreos | Oct 1, 2026 | Aug 13, 2026 |
| Redhat_linux | — | Upgrade rsync-debuginfoUpgrade rsync-debugsourceUpgrade rsync-daemonNo solution existsUpgrade rsync-rrsyncUpgrade rsync | Aug 26, 2026 | Aug 13, 2026 |
| Rocky_linux | — | Upgrade rsync-debuginfoUpgrade rsyncUpgrade rsync-debugsource | Sep 17, 2026 | Sep 15, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Sep 15, 2026 | Aug 13, 2026 |
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