PT-2026-65812 · Nanoid · Nanoid

CVE-2026-67214 · Published 2026-07-29 · Updated 2026-07-29

NVD

CVSS v3.1

5.9

Medium

Base vector

AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

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.

Fix

Infinite Loop

Weakness Enumeration

CWE-835

Related Identifiers

CVE-2026-67214

Affected Products

Nanoid

References · 4

• https://github.com/ai/nanoid/commit/6ccc67bbaba71d3d77a21d9b636f4171a268ce49 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2026-67214 · Security Note
• https://github.com/ai/nanoid/releases/tag/5.1.16 · Note
• https://vulncheck.com/advisories/nanoid-before-infinite-loop-via-negative-size-in-non-secure-module · Note