Race Condition Vulnerability in Filebrowser by Filebrowser
CVE-2026-82238

2.3LOW

Key Information:

Vendor

Filebrowser

Status
Filebrowser
Vendor
CVE Published:
28 August 2026

What is CVE-2026-82238?

Filebrowser version 2.24.0 has a race condition in its TUS upload handler. This vulnerability allows authenticated users to exploit concurrent PATCH requests, leading to a scenario where they can upload files exceeding the specified Upload-Length. By sending simultaneous PATCH requests targeting the same offset, attackers can bypass the length validation, potentially resulting in oversized uploads and executing unintended completion hooks.

Affected Version(s)

filebrowser 0

References

https://github.com/filebrowser/filebrowser/security/advis...
vendor-advisory
https://www.vulncheck.com/advisories/filebrowser-2.24.0-r...
third-party-advisory

CVSS V4

Score:
2.3
Severity:
LOW
Confidentiality:
None
Integrity:
None
Availability:
Low
Attack Vector:
Network
Attack Complexity:
High
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

skeletonsec
.