What’s Vulnerable › Vulnerabilities

CVE-2025-53826: FileBrowser Has Insecure JWT Handling Which Allows Session Replay Attacks after Logout

• Severity: critical (CVSS 9.8 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: yes
• Published: 2025-07-15 · updated 2026-06-17
• Weakness: CWE-305

Description

File Browser provides a file managing interface within a specified directory and it can be used to upload, delete, preview, rename, and edit files. In version 2.39.0, File Browser’s authentication system issues long-lived JWT tokens that remain valid even after the user logs out. As of time of publication, no known patches exist.

Affected products

• filebrowser: 2.39.0

References

• https://github.com/filebrowser/filebrowser/issues/5216
• https://github.com/filebrowser/filebrowser/security/advisories/GHSA-7xwp-2cpp-p8r7
• https://github.com/filebrowser/filebrowser/security/advisories/GHSA-7xwp-2cpp-p8r7

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