What is CVE-2026-70463?

CVE-2026-70463 is a high-severity vulnerability in Rsyncproject Rsync, classified under Incorrect Authorization. CVSS score: 8.1/10. Published 2026-08-13.

How severe is CVE-2026-70463?

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

Auth bypass in Rsyncproject Rsync

CVE-2026-70463

rsync 3.1.0 before 3.5.0 contains an authorization bypass in auth users directive parsing. The auth users parser uses comma-only tokenization when splitting the user list, which fails to correctly handle entries of the form @Group Name whe…

Vulnerability class: Broken Access Control

CVSS v3 metric

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

Affected products

Rsyncproject Rsync — versions 3.1.0, 3.5.0

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

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

Frequently asked questions

What is CVE-2026-70463?: CVE-2026-70463 is a high-severity vulnerability in Rsyncproject Rsync, classified under Incorrect Authorization. CVSS score: 8.1/10. Published 2026-08-13.
How severe is CVE-2026-70463?: High severity. CVSS v3 base score is 8.1 out of 10.