CVE-2026-53798

Published: Aug 13, 2026Modified: Aug 26, 2026

6.9

Vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XShow less

Source: disclosure@vulncheck.com (Secondary)

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.

Related CWEs

CWE-704

Incorrect Type Conversion or Cast

The product does not correctly convert an object, resource, or structure from one type to a different type.

References (3)

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

Source: disclosure@vulncheck.com

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

Source: disclosure@vulncheck.com

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

Source: disclosure@vulncheck.com

Timeline

No history available yet.