What’s Vulnerable › Vulnerabilities

CVE-2026-54096: File Browser: Improper Access Control Occurs via Pre-Created Public Share for a Non-existent Path

• Severity: high (CVSS 8.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-06-25 · updated 2026-06-25
• Weakness: CWE-863

Description

File Browser is a file managing interface for uploading, deleting, previewing, renaming, and editing files within a specified directory. Prior to 2.63.7, `POST /api/share/<path>` accepts an authenticated request for an arbitrary path and stores a public share record without checking whether the target file currently exists. Later, when a file is created at that same path, the previously created public share immediately becomes valid and exposes the new file through `GET /api/public/dl/<hash>`. This vulnerability is fixed in 2.63.7.

Affected products

• filebrowser: before 2.63.7

References

• https://github.com/filebrowser/filebrowser/security/advisories/GHSA-3q2p-72cj-682c
• https://github.com/filebrowser/filebrowser/security/advisories/GHSA-3q2p-72cj-682c

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