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OFFICIAL CVE RECORD8.2 High

CVE-2026-67214

nanoid Infinite Loop via Negative Size in non-secure module

Description

nanoid (Nano ID) before 3.3.16 and 5.1.16 contains an infinite loop in the customAlphabet and nanoid functions of its non-secure module (nanoid/non-secure). When these functions are given a negative size, the loop counter is decremented from a negative value and never reaches its termination condition, spinning indefinitely and hanging the calling thread. An application that passes an unvalidated, attacker-controlled negative size 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: unaffected

  • 4.0.0 to < 5.1.16affected
  • 5.1.16unaffected
  • 0 to < 3.3.16affected
  • 3.3.16unaffected
pkg:npm/nanoid

References