rsync before 3.5.0 contains a symlink race condition vulnerability in the sender's directory scanning logic that allows attackers to cause the sender to enumerate and transfer files outside the module root's intended subtree. Attackers who can create or manipulate symlinks in a path component of the scanned tree can replace a symlink with a directory entry pointing outside the module root between the lstat() call and the subsequent opendir() call, exposing files beyond the intended root in both daemon-mode and non-daemon sender-side scanning.
Fix
Patch, vendor advisory and mitigation references on NVD 1
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 8.2 · sambaNVD modified 2026-10-23 18:10
Affected (CPE criteria) 1
cpe:2.3:a:samba:rsync:*:*:*:*:*:*:*:*
References 3
- https://github.com/RsyncProject/rsync/releases/tag/v3.5.0 Product, Release Notes
- https://github.com/RsyncProject/rsync/security/advisories/GHSA-mch3-qr4p-chgm Vendor Advisory
- https://www.vulncheck.com/advisories/rsync-symlink-race-condition-directory-traversal Release Notes, Third Party Advisory