CVE-2026-53797

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.

Score

CVSS 4.0 5.7 Medium

Status

Analyzed - disclosure@vulncheck.com

Published

2026-08-13

Last modified

2026-10-24

Weaknesses

CWE-367, CWE-59

Affected products

• Rsync (Samba)

References

• https://github.com/RsyncProject/rsync/security/advisories/GHSA-3jj3-qvc7-jp6x
• https://github.com/RsyncProject/rsync/releases/tag/v3.5.0
• https://www.vulncheck.com/advisories/rsync-symlink-race-condition-information-disclosure