What is CVE-2026-44507?

CVE-2026-44507 is a medium-severity vulnerability in Rsyncproject Rsync, classified under Incorrect Authorization. CVSS score: 4.8/10. Published 2026-07-20.

How severe is CVE-2026-44507?

Medium severity. CVSS v3 base score is 4.8 out of 10.

Auth bypass in Rsyncproject Rsync

CVE-2026-44507

Rsync is a file-copying tool that uses a delta-transfer algorithm to synchronize remote and local files. In versions prior to 3.4.3, when using a daemon configured with a chroot, the reverse DNS lookup of the connecting client was perform…

Vulnerability class: Broken Access Control

CVSS v3 metric

CVSS v3 base score 4.8 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N.

Affected products

Rsyncproject Rsync — versions < 3.4.3

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

security-advisories@github.com (x_refsource_CONFIRM)

Frequently asked questions

What is CVE-2026-44507?: CVE-2026-44507 is a medium-severity vulnerability in Rsyncproject Rsync, classified under Incorrect Authorization. CVSS score: 4.8/10. Published 2026-07-20.
How severe is CVE-2026-44507?: Medium severity. CVSS v3 base score is 4.8 out of 10.