What’s Vulnerable › Vulnerabilities

CVE-2026-73613: filebrowser before 2.63.19 Out-of-Scope File Deletion via Symlink

• Severity: high (CVSS 8.2 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-08-13 · updated 2026-09-08
• Weakness: CWE-59

Description

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.

Affected products

• filebrowser: before 2.63.19 — fixed in 2.63.19

How to fix

Upgrade to a fixed version: filebrowser 2.63.19. Check the vendor advisory for mitigations.

References

• https://github.com/filebrowser/filebrowser/security/advisories/GHSA-m9f5-2232-frp6
• https://www.vulncheck.com/advisories/filebrowser-before-out-of-scope-file-deletion-via-symlink

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