CVE-2026-44542: critical vulnerability in gtsteffaniak filebrowser
FileBrowser Quantum: Unauthenticated Path Traversal in Public Share Delete Allows Arbitrary File Deletion
Published · Updated
28Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 9.1epss 0.6%
exploitation probability
0.6%top 53% of all CVEs
observed exploitation
nono source reports it
FileBrowser Quantum is a free, self-hosted, web-based file manager. Prior to 1.3.1-stable and 1.3.9-beta, attacker-controlled path input is joined with a trusted base path prior to sanitization, allowing traversal sequences (e.g., ../) to escape the intended shared directory. As a result, an unauthenticated attacker possessing a valid public share hash with delete permissions enabled can delete arbitrary files outside the shared directory within the share owner’s configured storage scope. This affects public/api/resources and public/api/resources/bulk. This vulnerability is fixed in 1.3.1-stable and 1.3.9-beta.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Affected products
gtsteffaniak · filebrowserRelated CVEs — gtsteffaniak filebrowser
In the same product, most dangerous first.
CVE-2026-30933HIGHFileBrowser Quantum Incomplete Remediation of CVE-2026-27611: Password-Protected Share Bypass via /public/api/share/infoEPSS 0.5%CVE-2026-48777CRITICALFileBrowser Quantum: Path Traversal in public share PATCH allows file ops outside shared directoryEPSS 0.5%CVE-2026-54685MEDIUMFileBrowser Quantum has Username Enumeration via Authentication Timing Side-ChannelEPSS 0.5%CVE-2026-54910HIGHFileBrowser Quantum's path traversal issue in subtitle handler allows any authenticated user to read arbitrary filesEPSS 0.5%CVE-2026-46410HIGHFileBrowser Quantum: unauthenticated user share share infoEPSS 0.4%CVE-2026-27611HIGHFileBrowser Quantum: Password Protection Not Enforced on Shared File LinksEPSS 0.4%