by Kastro
Paper/Archive/CVE-2025-53826

CVE-2025-53826

filebrowser filebrowser — FileBrowser Has Insecure JWT Handling Which Allows Session Replay Attacks after Logout

EPSS 0.6%public exploitCVSS 9.8
critical.is priorityof 100
49
CVSS 9.8 (NVD)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 46.2.462 × 209.2Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

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

ProductAffectedFixed inSource
filebrowser= 2.39.0–CNA

Scores by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
GitHub_M (CNA)7.7CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:P
CISA ADPSSVCExploitation: poc · Automatable: yes · Technical impact: partial

References

exploitgithub.com/filebrowser/filebrowser/security/advisories/GHSA-7xwp-2cpp-p8r7refgithub.com/filebrowser/filebrowser/issues/5216