CVE-2026-103472: Corvusoft Restbed

High severity, CVSS 7.5. EPSS: 0.4% chance of exploitation in the next 30 days.

restbed through 5.0.0 accepts WebSocket frames with declared payload lengths up to 2^63 bytes and buffers the payload without size limits in an unbounded stream buffer. Remote unauthenticated attackers can declare large frame sizes and stream payload data to exhaust server memory, causing denial of service through process crash.

Affected products

• Corvusoft Restbed: up to and including 5.0.0

Published 2026-09-30. Last modified 2026-10-01.