CVE-2026-67214
highnanoid (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).
Vendor / product: Nanoid Project — nanoid
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Affected products
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
References
- https://github.com/ai/nanoid/commit/6ccc67bbaba71d3d77a21d9b636f4171a268ce49 disclosure@vulncheck.com
- https://github.com/ai/nanoid/releases/tag/3.3.16 disclosure@vulncheck.com
- https://github.com/ai/nanoid/releases/tag/5.1.16 disclosure@vulncheck.com
- https://www.vulncheck.com/advisories/nanoid-before-infinite-loop-via-negative-size-in-non-... disclosure@vulncheck.com