CVE-2026-70454
RsyncProject rsync
Published 13 Aug 2026 · updated 8 Sept 2026 · Awaiting Analysis
7.6 High · CVSS 4.0, vulncheck.com
Description
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 invalid certificates. Attackers can exploit the failure to validate server TLS certificates against a trusted CA or verify certificate hostname matching to decrypt or tamper with rsync session content without detection by the client.