Infinite loop Affecting nanoid package, versions <3.3.17>=4.0.0 <5.1.6
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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Test your applications- Snyk IDSNYK-JS-NANOID-18506897
- published2 Aug 2026
- disclosed29 Jul 2026
- creditUnknown
Introduced: 29 Jul 2026
NewCVE-2026-67213 (opens in a new tab)How to fix?
Upgrade nanoid to version 3.3.17, 5.1.6 or higher.
Overview
Affected versions of this package are vulnerable to Infinite loop through the customRandom function in the customRandom implementation. An attacker can hang the calling thread by supplying a size of 0 to customRandom, which causes its ID generation loop to never reach a terminating condition. This breaks any application path that accepts an unvalidated, attacker-controlled size and passes it into customRandom, leaving the process stuck while handling the request.