Vulnerability 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.
CVSS Score
MEDIUM
Related Weaknesses (CWE)
References
- https://github.com/ai/nanoid/commit/6ccc67bbaba71d3d77a21d9b636f4171a268ce49
- https://github.com/ai/nanoid/releases/tag/5.1.16
- https://www.vulncheck.com/advisories/nanoid-before-infinite-loop-via-negative-si
FAQ
What is CVE-2026-67214?
CVE-2026-67214 is a vulnerability with a CVSS score of 5.9 (MEDIUM). 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 lo...
How severe is CVE-2026-67214?
CVE-2026-67214 has been rated MEDIUM with a CVSS base score of 5.9/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-67214?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.