CVE-2026-73613
HighCVSS 8.2Exploitation Probability (EPSS)
Low risk30th percentile - higher than 30% of all known CVEs
Summary
filebrowser versions before 2.63.19 contain an out-of-scope file deletion vulnerability in the TUS upload cache eviction mechanism that allows authenticated users with only Create permission to delete arbitrary files outside their scope. Attackers can swap an ancestor directory with a symlink during the cache TTL window to redirect the raw os.Remove call to an out-of-scope target, bypassing ScopedFs scope guards and Perm.Delete checks.
Risk Assessment
Risk of unauthorized deletion of files outside the permission scope, potentially leading to data loss and system integrity compromise.
Recommendation
Upgrade filebrowser to version 2.63.19 or later, which includes a fix for this vulnerability.
Original NVD description (English source)
filebrowser versions before 2.63.19 contain an out-of-scope file deletion vulnerability in the TUS upload cache eviction mechanism that allows authenticated users with only Create permission to delete arbitrary files outside their scope. Attackers can swap an ancestor directory with a symlink during the cache TTL window to redirect the raw os.Remove call to an out-of-scope target, bypassing ScopedFs scope guards and Perm.Delete checks.