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CVE PROGRAM SOURCE RECORD8.2 High

CVE-2026-67213

nanoid before 5.1.6 Infinite Loop via Zero Size in customAlphabet and customRandom

Description

nanoid (Nano ID) before 5.1.6 contains an infinite loop in the customAlphabet and customRandom functions. When these functions are configured with a size of 0, the internal generation loop never satisfies its exit condition and spins indefinitely, hanging the calling thread. An application that passes an unvalidated, attacker-controlled size of 0 to these functions is exposed to a denial-of-service condition.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

nanoid_project nanoid

Default version status: affected

  • 3.0.0 to < 3.3.17affected
  • 5.0.0 to < 5.1.6affected
pkg:npm/nanoid

References