CVE-2026-53797 rsync < 3.5.0 Symlink Race Condition Information Disclosure
An attacker can exploit a symlink race condition in rsync to read files outside the intended transfer root by manipulating parent directories.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-53797?
CVE-2026-53797 is a medium-severity vulnerability in RsyncProject rsync, published on 13 Aug 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
rsync before 3.5.0 contains a symlink race condition vulnerability in the sender's source tree traversal that allows an attacker who can manipulate a parent directory of the source tree to redirect file reads to unintended paths. Attackers can atomically replace a parent directory component with a symlink pointing outside the source root between path resolution and file open operations to disclose file contents outside the intended transfer root.
Which versions are affected by CVE-2026-53797?
It affects 1 product.
Products include Samba Rsync.
How do I fix CVE-2026-53797?
Upgrade to a fixed version.
Is CVE-2026-53797 being exploited?
There is no known exploitation of CVE-2026-53797 in the wild and no public exploit code.
Other vulnerabilities in RsyncProject rsync
- CVE-2017-15994 Security feature bypass in n/a
- CVE-2026-53791 rsync < 3.5.0 Daemon IP Spoofing via PROXY Protocol Header
- CVE-2026-70461 rsync 3.2.5 < 3.5.0 Heap Out-of-Bounds Write via files-from Entry
- CVE-2026-70455 rsync 3.4.2 < 3.5.0 DoS via --zt Zstandard Compression Thread Exhaustion
- CVE-2026-70463 rsync 3.1.0 < 3.5.0 Authorization Bypass via auth users Directive Parsing
Sources
Also known as ALPINE-CVE-2026-53797, AZL-95780, BELL-CVE-2026-53797, DEBIAN-CVE-2026-53797, ECHO-7458-dc2a-8577, GHSA-3jj3-qvc7-jp6x and 1 more.