Vulnerability in Rsyncproject Rsync
CVE-2026-53784
rsync before 3.5.0 contains a path traversal vulnerability that allows remote clients to access files outside the intended module root when use chroot is disabled and the module root path or a component of it is a symlink. The daemon calls chdir() to the module root at session initialization without resolving symlinks via realpath() or equivalent, causing subsequent relative-path operations to reference files relative to the symlink target rather than the intended module root, enabling unauthorized file access.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
EPSS: 0.002 (10.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 11th percentile — 10.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: +0.000
Affected products
- Rsyncproject Rsync — versions 0, 3.5.0
- Samba Rsync
Weakness classification (CWE)
References
- github.com/RsyncProject/rsync/releases/tag/v3.5.0 (release-notes, Product, Release Notes)
- github.com/RsyncProject/rsync/security/advisories/GHSA-ffg2-fr5g-3rxw (vendor-advisory, Vendor Advisory)
- www.vulncheck.com/advisories/rsync-path-traversal-via-symlink-module-root (Third Party Advisory, Release Notes, third-party-advisory)
Frequently asked questions
- What is CVE-2026-53784?
- CVE-2026-53784 is a high-severity vulnerability in Rsyncproject Rsync, classified under Improper Link Resolution Before File Access. CVSS score: 7.1/10. Published 2026-08-13.
- How severe is CVE-2026-53784?
- High severity. CVSS v3 base score is 7.1 out of 10.