Allocation of Resources Without Limits or Throttling Affecting undici package, versions >=8.0.0 <8.5.0
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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- published18 Jun 2026
- disclosed17 Jun 2026
- creditStrickland
Introduced: 17 Jun 2026
CVE-2026-9675 (opens in a new tab)How to fix?
Upgrade undici to version 8.5.0 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 the handling of fragmented WebSocket messages. An attacker can cause unbounded memory growth and exhaust system resources by sending numerous small fragments that individually pass validation but collectively exceed the intended payload size limit.