Vulnerability Description
rsync before 3.5.0 contains a time-of-check to time-of-use (TOCTOU) race condition vulnerability in the non-daemon receiver's destination directory handling that allows an attacker who can manipulate destination path parent components to redirect file writes to unintended locations. Attackers can substitute a symlink for a component of the destination path between the path resolution and chdir() call, causing the receiver's working directory to be established outside the intended destination tree so that subsequent relative-path file writes land in unintended filesystem locations.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/RsyncProject/rsync/releases/tag/v3.5.0
- https://github.com/RsyncProject/rsync/security/advisories/GHSA-w75h-ccff-w53m
- https://www.vulncheck.com/advisories/rsync-toctou-race-condition-via-destination
FAQ
What is CVE-2026-53796?
CVE-2026-53796 is a vulnerability with a CVSS score of 6.3 (MEDIUM). rsync before 3.5.0 contains a time-of-check to time-of-use (TOCTOU) race condition vulnerability in the non-daemon receiver's destination directory handling that allows an attacker who can manipulate ...
How severe is CVE-2026-53796?
CVE-2026-53796 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-2026-53796?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.