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CVE-2026-53794 Details

Description

rsync before 3.5.0 contains a logic error in --max-alloc handling that allows a sender or configuration setting --max-alloc=0 to disable allocation sanity checks entirely rather than enforcing a zero-byte cap. Attackers can exploit this flaw to cause the receiver to attempt unbounded memory allocations for file list and data structures, potentially exhausting available memory and causing a denial of service.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:5.3 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://github.com/RsyncProject/rsync/releases/tag/v3.5.0	[email protected]
https://github.com/RsyncProject/rsync/security/advisories/GHSA-p827-vwcp-m964	[email protected]
https://www.vulncheck.com/advisories/rsync-denial-of-service-via-max-alloc-0-logic-error	[email protected]

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-1284	Improper Validation of Specified Quantity in Input	[email protected]

Affected Products

No affected product data is available for this CVE.

Change History

2 change records found show changes

Date	Action	Recorded By
Aug 13, 2026	CVE Modified	CISA-ADP
Aug 13, 2026	New CVE Received	[email protected]