HIGHVulnerability
Verified
Global

NVD HIGH: CVE-2026-70452 — rsync 3.1.0 before 3.5.0 contains an access control bypass vulnerability that al...

·Source: NIST NVD

Updated:

Executive Summary

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

Analysis

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. CVSS Score: 7.4. Published: 2026-08-13T15:19:58.740.

Indicators of Compromise (1)

CVE (1)
CVE-2026-70452
NVDMITRE CVE
Source Attribution

Originally published by NIST NVD on Aug 13, 2026. Verified by: NIST.

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