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CVE-2026-53786: CWE-863 Incorrect Authorization in RsyncProject rsync

0
Medium
VulnerabilityCVE-2026-53786cvecve-2026-53786cwe-863
Published: 08/13/2026 (08/13/2026, 14:35:34 UTC)
Source: CVE Database V5
Vendor/Project: RsyncProject
Product: rsync

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.

CVSS v4.0

Score 6.9medium

Attack Vector
Network
Attack Complexity
Low
Attack Requirements
None
Privileges Required
None
User Interaction
None
Vuln. Confidentiality
Low
Vuln. Integrity
Low
Vuln. Availability
None
Subsq. Confidentiality
None
Subsq. Integrity
None
Subsq. Availability
None
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N

Affected software

GitHub Actionsmore threats →cve
rsync
pkg:github/rsync
Affected versions
<=3.4.4

Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.

Technical Details

Data Version
5.2
Assigner Short Name
VulnCheck
Date Reserved
2026-06-10T20:14:32.827Z
Cvss Version
4.0
State
PUBLISHED
Remediation Level
null

Threat ID: 6a7ddec4bf8831d5395cfc83

Added to database: 08/13/2026, 15:12:04 UTC

Last updated: 08/13/2026, 15:12:04 UTC

Views: 1

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