Vulnerability Description
Rsync version 3.4.2 and prior contain symlink race condition vulnerabilities in path-based system calls including chmod, lchown, utimes, rename, unlink, mkdir, symlink, mknod, link, rmdir, and lstat that allow local attackers to redirect operations to files outside the exported rsync module. Attackers with local filesystem access can exploit the timing window between path resolution and syscall execution by swapping symlinks to apply sender-supplied permissions, ownership, timestamps, or filenames to arbitrary files outside the intended module boundary on rsync daemons configured with 'use chroot = no'.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Samba | Rsync | <= 3.4.2 |
Related Weaknesses (CWE)
References
- https://github.com/RsyncProject/rsync/releases/tag/v3.4.3Release Notes
- https://github.com/RsyncProject/rsync/security/advisories/GHSA-4h9m-w5ff-j735Vendor Advisory
- https://www.vulncheck.com/advisories/rsync-symlink-race-condition-via-path-basedThird Party Advisory
FAQ
What is CVE-2026-43619?
CVE-2026-43619 is a vulnerability with a CVSS score of 6.3 (MEDIUM). Rsync version 3.4.2 and prior contain symlink race condition vulnerabilities in path-based system calls including chmod, lchown, utimes, rename, unlink, mkdir, symlink, mknod, link, rmdir, and lstat t...
How severe is CVE-2026-43619?
CVE-2026-43619 has been rated MEDIUM with a CVSS base score of 6.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-43619?
Check the references section above for vendor advisories and patch information. Affected products include: Samba Rsync.