GHSA-28wg-ghj8-5hjv
nanoid: non-secure generators can loop indefinitely with negative size
At a glance
- Published
- Updated
- CVE
- CVE-2026-67214
- CVSS_V3
- CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
- CVSS_V4
- CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
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.
Affected packages
| Package | Versions |
|---|---|
| npm · nanoid | introduced 0, fixed 3.3.16 |
| npm · nanoid | introduced 4.0.0, fixed 5.1.16 |
References
- https://nvd.nist.gov/vuln/detail/CVE-2026-67214 ADVISORY
- https://github.com/ai/nanoid/pull/600 WEB
- https://github.com/ai/nanoid/pull/601 WEB
- https://github.com/ai/nanoid/commit/6ccc67bbaba71d3d77a21d9b636f4171a268ce49 WEB
- https://github.com/ai/nanoid/commit/e835c9b71eab832bc6106944bdd26ea96cf2c66d WEB
- https://github.com/ai/nanoid PACKAGE
- https://github.com/ai/nanoid/releases/tag/5.1.16 WEB
- https://www.vulncheck.com/advisories/nanoid-before-infinite-loop-via-negative-size-in-non-secure-module WEB
Sources
| Source | Licence |
|---|---|
| OSV.dev | CC-BY 4.0 — GitHub Advisory Database |