Allocation of Resources Without Limits or Throttling Affecting undici package, versions >=5.15.0 <6.29.1>=7.0.0 <7.30.1>=8.0.0 <8.12.2
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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Start learning- Snyk IDSNYK-JS-UNDICI-21181015
- published18 Oct 2026
- disclosed15 Oct 2026
- creditbenzdeus
Introduced: 15 Oct 2026
NewCVE-2026-109932 (opens in a new tab)How to fix?
Upgrade undici to version 6.29.1, 7.30.1, 8.12.2 or higher.
Overview
undici is an An HTTP/1.1 client, written from scratch for Node.js
Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling via unbounded automatic PONG write queuing in the WebSocket ByteParser receiver. A remote attacker can send a flood of PING control frames over a standard WebSocket connection, causing the outbound write queue to grow without bound because each inbound PING triggers an automatic PONG reply that is enqueued regardless of socket backpressure, exhausting memory and crashing the process.