CVE-2026-53789
MediumCVSS 6.5Exploitation Probability (EPSS)
Low risk24th percentile - higher than 24% of all known CVEs
Summary
rsync before 3.5.0 contains an improper path handling vulnerability that allows a malicious sender to expand the scope of --delete operations beyond the intended destination subtree. Attackers can exploit multiple variants to cause the receiver to delete files outside the authorized destination directory.
Risk Assessment
The risk is the possibility of unauthorized deletion of files outside the intended directory, potentially leading to data loss or system integrity compromise.
Recommendation
It is recommended to immediately upgrade rsync to version 3.5.0 or later, which includes a fix for this vulnerability.
Original NVD description (English source)
rsync before 3.5.0 contains an improper path handling vulnerability that allows a malicious sender to expand the scope of --delete operations beyond the intended destination subtree by sending a crafted file list that causes rsync to reclassify implied parent directory entries or treat synthetic paths as the transfer root. Attackers can exploit multiple variants including implied parent reclassification, synthetic root path construction, legacy protocol behavior below version 30, and non-directory root handling to cause the receiver to delete files outside the authorized destination directory.