Improper Neutralization of Special Elements in Output Used by a Downstream Component in Rsync - CVE-2026-53788
Published: August 13, 2026
Vulnerability identifier: #VU142291
CSH Severity: Medium
CVSS v4: 6.9 [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]
CVE-ID: CVE-2026-53788
CWE-ID: CWE-74
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to inject requests into a persistent helper protocol and disclose sensitive information or modify data.
The vulnerability exists due to improper neutralization of special elements in output used by a downstream component in the name-converter helper when writing peer-controlled names into its persistent line protocol. A remote attacker can supply a name containing a newline or carriage return to inject requests into that channel to disclose sensitive information or modify data.
Affected software
Rsync
How to mitigate CVE-2026-53788
Install security update from vendor's website.
Rsync - update to 3.5.0