CVE-2026-53795
rsync < 3.5.0 Arbitrary File Write via --temp-dir/--link-dest
- State
- Published
- Severity
- 7.2 High
- Published
- Aug 13, 2026
- Updated
- Aug 14, 2026
- Reserved
- Jun 10, 2026
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 7.2 High | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N | VulnCheck |
| 3.1 | 8.1 High | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:H | VulnCheck |
Weaknesses
- CWE-59 Improper Link Resolution Before File Access ('Link Following')
Affected Products
| Product | Versions |
|---|---|
rsyncRsyncProject |
|
References
- GitHub Security Advisory (GHSA-m9vj-637x-v6pq)vendor-advisory
- rsync 3.5.0 Release Notesrelease-notes
- https://www.vulncheck.com/advisories/rsync-arbitrary-file-write-via-temp-dir-link-destthird-party-advisory
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