一线运维实战手记 · 云计算 · 数据库 · 故障排查
2026年9月4日

CVE-2026-70452 [HIGH] – rsync 3.1.0 before 3.5.0 contains an access control bypass vulnerability that allows remot

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rsync 3.1.0 before 3.5.0 contains an access control bypass vulnerability that allows remote attackers to circumvent hosts deny rules by inducing DNS resolution failures during hostname-based access control evaluation. When a DNS lookup for a hostname-based deny rule fails, the daemon skips the rule rather than defaulting to a deny decision, enabling attackers who can trigger DNS failures to bypass module-level IP access controls and gain unauthorized access to restricted module file trees.