CVE-2025-53826 json
FileBrowser Has Insecure JWT Handling Which Allows Session Replay Attacks after Logout
published 2025-07-15 15 mo ago modified 2026-09-10 1 mo ago also EUVD-2025-21540 , GHSA-7xwp-2cpp-p8r7 , GO-2025-3812
- cvss
- 9.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 46%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- govulncheck-vulndb openSUSE Tumbleweed 0.0.20250730T213748-1.1
opensuse advisories openSUSE-SU-2025:15405-1
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 15 mo ago
Exploit prediction
0.55% chance of exploitation in the next 30 days, higher than 46% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/filebrowser/filebrowser/security/advisories/GHSA-7xwp-2cpp-p8r7 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 7.7 | CVSS: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 |
| CNA | 4.0 | 7.7 | CVSS: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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | github.com/filebrowser/filebrowser | <=2.39.0 all versions |
no fix listed |
| go | github.com/filebrowser/filebrowser/v2 | <=2.39.0 all versions |
no fix listed |
Affected products
- filebrowser filebrowser
Classification
References
-
github.com
/filebrowser/filebrowser/security/advisories/GHSA-7xwp-2cpp-p8r7
exploit, web, vendor-advisory, advisory
-
github.com
/filebrowser/filebrowser/issues/5216
web, issue-tracking, report
-
nvd.nist.gov
/vuln/detail/CVE-2025-53826
advisory
-
github.com
/filebrowser/filebrowser
package
Sources
- CVE List CVE-2025-53826
- GitHub Advisory GHSA-7xwp-2cpp-p8r7
- NVD CVE-2025-53826
- OSV GO-2025-3812
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.