CVE-2026-53799: rsync before 3.5.0 contains a symlink race condition vulnerability that allows local attackers to cause rsync to apply…
CVE-2026-53799 · Severity: medium · CVSS 6.3 · Published 2026-08-13
rsync before 3.5.0 contains a symlink race condition vulnerability that allows local attackers to cause rsync to apply arbitrary ACLs or extended attributes to unintended files by substituting a symlink at a predictable destination path between the file write and the subsequent acl_set_file() or lsetxattr() call. Attackers can exploit this timing window to redirect ACL and xattr application through a crafted symlink to files outside the intended destination tree, potentially granting elevated permissions and enabling local privilege escalation.
No. Junglewise Threat Intelligence has no report of CVE-2026-53799 being exploited in the wild.
How severe is CVE-2026-53799?
Medium severity, with a CVSS score of 6.3, published 13 August 2026.
Which products and versions are affected?
Samba Rsync. The advisory does not name versions.
Is there a fix for CVE-2026-53799?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2026-53799?
Check whether you run Samba Rsync. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.