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VULNERABILITIES

CVE-2026-53786 Details

Description

rsync before 3.5.0 contains a filter rule bypass vulnerability that allows authenticated clients to override module-level filter restrictions by supplying malicious --filter merge file directives. Attackers can inject client-side merge file directives during filter evaluation to introduce rules that supersede daemon module-level restrictions, gaining access to files the module filter was intended to exclude.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:6.5 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/RsyncProject/rsync/releases/tag/v3.5.0 [email protected]ProductRelease Notes
https://github.com/RsyncProject/rsync/security/advisories/GHSA-mrc3-6cwx-hch6 [email protected]Vendor Advisory
https://www.vulncheck.com/advisories/rsync-filter-rule-bypass-via-filter-merge-directive [email protected]Release NotesThird Party Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-863Incorrect Authorization[email protected]

Affected Products

ProductVersions
samba rsync
< 3.5.0

CPE

  • cpe:2.3:a:samba:rsync:*:*:*:*:*:*:*:*

Remediation

  • No remediation found in references.

Change History

3 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-53786
NVD Published Date:
Aug 13, 2026
NVD Last Modified:
Aug 31, 2026
Source:
[email protected]
CVE-2026-53786 Details - Not Deferred