What is CVE-2026-53790?

CVE-2026-53790 is a high-severity vulnerability in Rsyncproject Rsync, classified under OS Command Injection. CVSS score: 8.1/10. Published 2026-08-13.

How severe is CVE-2026-53790?

High severity. CVSS v3 base score is 8.1 out of 10.

RCE in Rsyncproject Rsync

CVE-2026-53790

rsync before 3.5.0 contains multiple command and argument injection vulnerabilities that allow attackers to execute arbitrary commands by supplying malicious input through several code paths, including the RSYNC_CONNECT_PROG environment va…

Vulnerability class: Command Injection (OS Command Injection)

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Rsyncproject Rsync — versions 0, 3.5.0

Weakness classification (CWE)

CWE-78 — OS Command Injection
CWE-88 — Argument Injection

References

disclosure@vulncheck.com (release-notes)
disclosure@vulncheck.com (vendor-advisory)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-53790?: CVE-2026-53790 is a high-severity vulnerability in Rsyncproject Rsync, classified under OS Command Injection. CVSS score: 8.1/10. Published 2026-08-13.
How severe is CVE-2026-53790?: High severity. CVSS v3 base score is 8.1 out of 10.