MEDIUM 6.9 NVD
CVE-2026-53794
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 check
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.
References
- https://github.com/RsyncProject/rsync/releases/tag/v3.5.0
- https://github.com/RsyncProject/rsync/security/advisories/GHSA-p827-vwcp-m964
- https://www.vulncheck.com/advisories/rsync-denial-of-service-via-max-alloc-0-logic-error
This medium severity vulnerability with a CVSS score of 6.9 was published on 2026-08-13 via NVD.
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