CVE-2026-103472
High
Description
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.
SeverityHigh
CVSS7.5
Exploit probability—
ProductCorvusoft Restbed
PublishedSep 30, 2026
First seenSep 30, 2026
Weakness typeCWE-770Allocation of resources without limits
How to fix
Sources list no fixed version or patch link for this vulnerability.
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Corvusoft restbed | v ≤ 5.0.0 | — |
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