Denial of Service in Filebrowser Product by Filebrowser Developer
CVE-2026-90927

7.1HIGH

Key Information:

Vendor

Filebrowser

Status
Filebrowser
Vendor
CVE Published:
14 September 2026

What is CVE-2026-90927?

The Filebrowser application version up to 2.63.23 is susceptible to a denial of service vulnerability due to its failure to impose limits on WebSocket message sizes. This vulnerability is particularly concerning as it allows authenticated users to send oversized messages, which can potentially overwhelm the server's heap memory. As a result, the server may become unresponsive, leading to a denial of service. This issue persists regardless of the EnableExec setting or the assigned Execute permissions, making it crucial for users to assess and mitigate this risk promptly.

Affected Version(s)

filebrowser 0 <= 2.63.23

References

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

CVSS V4

Score:
7.1
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

alham-rizvi
.