Vulnerability in Rsyncproject Rsync
CVE-2026-53795
rsync before 3.5.0 contains an arbitrary file write vulnerability that allows attackers to write files outside the intended destination tree by specifying an absolute path via --temp-dir or --link-dest options. The rename-confinement logic is bypassed when these options resolve to paths outside the destination tree, enabling attacker-controlled values to write files to arbitrary locations accessible to the rsync process.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H.
EPSS exploit prediction
EPSS: 0.006 (44.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 44th percentile — 44.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.006 · change: +0.001
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-m9vj-637x-v6pq (vendor-advisory, Vendor Advisory)
- www.vulncheck.com/advisories/rsync-arbitrary-file-write-via-temp-dir-link-dest (Third Party Advisory, Release Notes, third-party-advisory)
Frequently asked questions
- What is CVE-2026-53795?
- CVE-2026-53795 is a high-severity vulnerability in Rsyncproject Rsync, classified under Improper Link Resolution Before File Access. CVSS score: 8.1/10. Published 2026-08-13.
- How severe is CVE-2026-53795?
- High severity. CVSS v3 base score is 8.1 out of 10.