What is CVE-2026-70454?

CVE-2026-70454 is a high-severity vulnerability in Rsyncproject Rsync, classified under Improper Certificate Validation. CVSS score: 8.0/10. Published 2026-08-13.

How severe is CVE-2026-70454?

High severity. CVSS v3 base score is 8.0 out of 10.

Vulnerability in Rsyncproject Rsync

CVE-2026-70454

rsync 3.2.0 through 3.2.3 (openssl mode) and rsync-ssl through 3.4.4 (stunnel mode) contain a TLS certificate validation vulnerability that allows on-path attackers to intercept encrypted sessions by presenting self-signed or otherwise inv…

Vulnerability class: Improper Certificate Validation

CVSS v3 metric

CVSS v3 base score 8.0 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:H/A:N.

Affected products

Rsyncproject Rsync — versions 0, 3.5.0

Weakness classification (CWE)

CWE-295 — Improper Certificate Validation

References

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

Frequently asked questions

What is CVE-2026-70454?: CVE-2026-70454 is a high-severity vulnerability in Rsyncproject Rsync, classified under Improper Certificate Validation. CVSS score: 8.0/10. Published 2026-08-13.
How severe is CVE-2026-70454?: High severity. CVSS v3 base score is 8.0 out of 10.