Allocation of Resources Without Limits or Throttling Affecting @hono/node-server package, versions >=2.0.0 <2.0.10
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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- published22 Jul 2026
- disclosed21 Jul 2026
- creditSaad FELLAHI
Introduced: 21 Jul 2026
CVE-2026-73565 (opens in a new tab)How to fix?
Upgrade @hono/node-server to version 2.0.10 or higher.
Overview
@hono/node-server is a Node.js Adapter for Hono
Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling via the upgradeWebSocket. An attacker can cause unbounded memory consumption by sending repeated WebSocket upgrade requests with missing or malformed Sec-WebSocket-Key headers, resulting in permanent retention of request objects and eventual exhaustion of system memory.