CVE-2026-67214 – nanoid before 5.1.16 Infinite Loop via Negative Size in non-secure module

CVE ID :CVE-2026-67214

Published : July 29, 2026, 2:16 p.m. | 24 minutes ago

Description :nanoid (Nano ID) before 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.

Severity: 8.2 | HIGH

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