CVE-2026-53798

rsync < 3.5.0 Privilege Confusion via name-converter uid/gid mapping

Published: Aug 13, 2026Updated: Aug 31, 2026 Sources: CVE List NVDCWE-704

5.3MEDIUM

Description

rsync before 3.5.0 contains a privilege confusion vulnerability in the name-converter subprocess uid/gid mapping that allows local attackers to cause transferred files to be owned by root by influencing name-converter responses to return empty values. When the name-converter subprocess returns an empty response for a uid or gid lookup, rsync incorrectly interprets it as a successful resolution to uid/gid 0 (root) rather than a lookup failure, and if the name-converter also signals fake super-user status, rsync proceeds with root ownership assignments for transferred files.

No summary for this CVE yet.

CVSS Vector Breakdown

Exploitability

AV:NAttack Vector

Network

AC:LAttack Complexity

Low

PR:NPrivileges Required

None

UI:NUser Interaction

None

Scope

S:UScope

Unchanged

Impact

C:NConfidentiality

None

I:LIntegrity

Low

A:NAvailability

None

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Weaknesses

CWE-704

Affected Products

RsyncProject

oss-projectaka rsync project, rsync

rsyncLibrary

OSS Libraries / generic-library

samba

oss-project·DE

rsyncOn-prem

OSS Libraries / generic-library

Exploitability

Official Patch Available

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References

https://github.com/RsyncProject/rsync/security/advisories/GHSA-hx7p-3gvv-pqgv

github.com

https://github.com/RsyncProject/rsync/releases/tag/v3.5.0

github.com

https://www.vulncheck.com/advisories/rsync-privilege-confusion-via-name-converter-uid-gid-mapping

vulncheck.com

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