What is CVE-2026-67213?

CVE-2026-67213 is a medium-severity vulnerability in Nanoid_project Nanoid, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 5.9/10. Published 2026-07-29.

How severe is CVE-2026-67213?

Medium severity. CVSS v3 base score is 5.9 out of 10.

Vulnerability in Nanoid_project Nanoid

CVE-2026-67213

nanoid (Nano ID) before 5.1.6 contains an infinite loop in the customAlphabet and customRandom functions. When these functions are configured with a size of 0, the internal generation loop never satisfies its exit condition and spins indef…

CVSS v3 metric

CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.

Affected products

Nanoid_project Nanoid — versions 0, 5.1.6

Weakness classification (CWE)

CWE-835 — Loop with Unreachable Exit Condition (Infinite Loop)

References

disclosure@vulncheck.com (release-notes)
disclosure@vulncheck.com (patch)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-67213?: CVE-2026-67213 is a medium-severity vulnerability in Nanoid_project Nanoid, classified under Loop with Unreachable Exit Condition (Infinite Loop). CVSS score: 5.9/10. Published 2026-07-29.
How severe is CVE-2026-67213?: Medium severity. CVSS v3 base score is 5.9 out of 10.