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CVE-2026-70452 is a fail-open access-control vulnerability in rsync versions 3.1.0 through 3.4.4. During rsync daemon evaluation of hostname-based hosts deny entries, a DNS-resolution failure causes the applicable deny rule to be skipped rather than treated as a denial. A remote attacker able to induce or exploit the relevant resolution failure can bypass configured module-level access restrictions.
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What it means. What to do now. Patch path, mitigations, and the assume-compromise checklist.
What an attacker gets, and what they’ve been doing with it.
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Patch, then assume compromise.
No public exploits tracked yet. Mallory keeps watching.
No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
10 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
One of 33 rsync security issues addressed by the FreeBSD advisory.
A vulnerability referenced in a Fedora security advisory for the rsync package; no specific technical details are provided in the content.
Unknown
A vulnerability fixed in version 3.5.0; no further details are provided in the content.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.