{"id":"CVE-2026-53792","aliases":["GHSA-cg57-rp9g-56hw"],"url":"https://o3.security/vulnerability/CVE-2026-53792","summary":"rsync < 3.5.0 Out-of-Bounds Read via Zero-Length Checksum Block","details":"rsync before 3.5.0 contains an out-of-bounds read vulnerability in the sender-side block matching logic that allows a malicious receiver to trigger memory access before the start of an allocated buffer by sending a crafted checksum block with a length of zero. Attackers can send a specially crafted checksum set containing a zero-length block to cause a negative offset calculation during delta computation, resulting in an out-of-bounds read of file data buffer memory on the sender side.","published":"2026-08-13T14:38:30.864Z","modified":"2026-08-15T04:06:52.828601633Z","cvss":null,"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[],"fix":null,"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/53xxx/CVE-2026-53792.json"},{"type":"PACKAGE","url":"https://github.com/RsyncProject/rsync"},{"type":"ADVISORY","url":"https://github.com/RsyncProject/rsync/releases/tag/v3.5.0"},{"type":"ADVISORY","url":"https://github.com/RsyncProject/rsync/security/advisories/GHSA-cg57-rp9g-56hw"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-53792"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/rsync-out-of-bounds-read-via-zero-length-checksum-block"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-15T04:06:52.828601633Z"}}