CVE-2026-90927
7.1
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Summary
filebrowser through 2.63.23 fails to limit WebSocket message size in the /api/command handler before checking permissions, allowing authenticated users to buffer arbitrarily large messages. Attackers can send oversized WebSocket messages to exhaust server heap memory and cause denial of service regardless of EnableExec setting or Execute permission.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| filebrowser | filebrowser | 0 <= 2.63.23 | affected |
Weaknesses
- CWE-400: Uncontrolled Resource Consumption
References
- https://github.com/filebrowser/filebrowser/security/advisories/GHSA-39cx-23x9-5c8p
- https://www.vulncheck.com/advisories/filebrowser-through-2.63.23-denial-of-service-via-unbounded-websocket-message
Feedback
Was this page helpful?
Glad to hear it! Please tell us how we can improve.
Sorry to hear that. Please tell us how we can improve.