CVE-2026-70452

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Source
https://cve.org/CVERecord?id=CVE-2026-70452
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-70452.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-70452
Aliases
  • GHSA-6692-28cx-wpqq
Downstream
Related
Published
2026-08-13T14:46:50Z
Modified
2026-09-10T18:26:51Z
Severity
  • 9.1 (Critical) CVSS_V4 - CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N CVSS Calculator
Summary
rsync 3.1.0 < 3.5.0 Access Control Bypass via DNS Resolution Failure
Details

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.

Database specific 
{
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
        "CWE-636",
        "CWE-863"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/70xxx/CVE-2026-70452.json"
}
References

Affected packages

Git / github.com/rsyncproject/rsync

Affected ranges

Type
GIT
Repo
https://github.com/rsyncproject/rsync
Events
Introduced
bc58313bf7f42f0993f7279299e8137e0f14f01c
Fixed
471e17dc0d68233db84db11be82c9f62f4661214
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "3.1.0"
        },
        {
            "last_affected": "3.4.4"
        },
        {
            "fixed": "3.5.0"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "DESCRIPTION",
        "REFERENCES"
    ]
}

Affected versions

v3.*
v3.1.0
v3.1.1
v3.1.1pre1
v3.1.1pre2
v3.1.2
v3.1.2pre1
v3.1.3
v3.1.3pre1
v3.2.0
v3.2.0pre1
v3.2.0pre2
v3.2.0pre3
v3.2.1
v3.2.1pre1
v3.2.2
v3.2.2pre1
v3.2.2pre2
v3.2.2pre3
v3.2.3
v3.2.3pre1
v3.2.4
v3.2.4pre1
v3.2.4pre2
v3.2.4pre3
v3.2.4pre4
v3.2.5
v3.2.5pre1
v3.2.5pre2
v3.2.6
v3.2.7
v3.2.7pre1
v3.3.0
v3.3.0pre1
v3.4
v3.4.0
v3.4.1
v3.4.2
v3.4.3

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-70452.json"