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CVE-2026-53790 is a set of command and argument injection flaws in rsync versions before 3.5.0. Several code paths pass insufficiently sanitized values to command execution mechanisms, including handling of the RSYNC_CONNECT_PROG environment variable, daemon hooks, the exec-style rsync-ssl wrapper, and remote-shell command construction. Shell metacharacters or newline characters in attacker-controlled hostnames, hostspecs, or related values can inject additional commands or arguments.
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No public exploit code observed for this vulnerability.
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Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
12 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A vulnerability covered by TencentOS security advisory TSSA-2026-0874 affecting TencentOS Server 4's rsync package. The supplied CVSS v2 vector indicates network reachability, low attack complexity, authentication required, and complete confidentiality, integrity, and availability impact.
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
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.