What is CVE-2026-70455?

CVE-2026-70455 is a high-severity vulnerability in Rsyncproject Rsync, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2026-08-13.

How severe is CVE-2026-70455?

High severity. CVSS v3 base score is 7.5 out of 10.

Resource exhaustion in Rsyncproject Rsync

CVE-2026-70455

rsync 3.4.2 before 3.5.0 contains a denial of service vulnerability that allows a remote sender to exhaust system resources by specifying the --zt short alias for --compress-threads, which bypasses the refuse options directive's string mat…

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Rsyncproject Rsync — versions 3.4.2, 3.5.0

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

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

Frequently asked questions

What is CVE-2026-70455?: CVE-2026-70455 is a high-severity vulnerability in Rsyncproject Rsync, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2026-08-13.
How severe is CVE-2026-70455?: High severity. CVSS v3 base score is 7.5 out of 10.