Medium severity · published Jul 8, 2026
CVE-2026-55668
File Browser: ScopedFs follows a dangling symlink on write, letting a scoped user create files outside their scope
6.3
CVSS
0.4%
EPSS
No
On KEV
Description
File Browser provides a web file managing interface. Prior to 2.63.16, ScopedFs validates the nearest existing ancestor of a dangling symlink as in scope and then follows the symlink during file creation, allowing an authenticated user with Create and Modify permissions to create attacker-controlled files outside the user's scope. This issue is fixed in version 2.63.16.
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:N
Attack vector
Network
Complexity
High
Privileges
Low
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 32% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
FI
filebrowser · filebrowser
< 2.63.16 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-55668
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-55668
github.com
https://github.com/filebrowser/filebrowser/commit/64511ce45e3be379e965f7f4fb0929a068d5bb81
github.com
https://github.com/filebrowser/filebrowser/releases/tag/v2.63.16
github.com
https://github.com/filebrowser/filebrowser/security/advisories/GHSA-8wc8-hf36-mjh9
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