Vulnerability Description
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
HIGH
Related Weaknesses (CWE)
References
- https://github.com/RsyncProject/rsync/releases/tag/v3.5.0
- https://github.com/RsyncProject/rsync/security/advisories/GHSA-6692-28cx-wpqq
- https://www.vulncheck.com/advisories/rsync-access-control-bypass-via-dns-resolut
FAQ
What is CVE-2026-70452?
CVE-2026-70452 is a vulnerability with a CVSS score of 7.4 (HIGH). 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 co...
How severe is CVE-2026-70452?
CVE-2026-70452 has been rated HIGH with a CVSS base score of 7.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-70452?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.