medium6.5
CVE-2026-90927
filebrowser through 2.63.23 fails to limit WebSocket message size in the /api/command handler before checking permissions, allowing authenticated users to buff…
Impact
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 products
| Product | Affected versions |
|---|---|
| Filebrowser | through 2.63.23 |
Versions were read from the advisory text. No structured product data has been published for this record yet.
Weakness classification
References
- NVD record
- CVE.org record
- 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
- https://github.com/filebrowser/filebrowser/security/advisories/GHSA-39cx-23x9-5c8p