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National Vulnerability Database

National Vulnerability Database

NVD

National Vulnerability Database
  1. Vulnerabilities

CVE-2026-73086 Detail

Description

nanoid is a secure, URL-friendly, unique string ID generator for JavaScript. Prior to versions 3.3.12 and 5.1.11, the nanoid(size) function in index.js and index.cjs coerces the user-influenced size parameter to a signed 32-bit integer, allowing a value of 2147483648 to become -2147483648 and corrupt the process-wide CSPRNG poolOffset in fillPool(), which causes subsequent session tokens, CSRF tokens, API keys, and unique identifiers to become the deterministic string "uuuuuuuuuuuuuuuuuuuuu" until the process restarts. This issue is fixed in versions 3.3.12 and 5.1.11.


Metrics

 
NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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URL Source(s) Tag(s)
https://github.com/ai/nanoid/commit/7087969281cab8ba8ae3babf1894e819068b3bb4 GitHub, Inc.
https://github.com/ai/nanoid/commit/821dfed7b5db7f88e92f56c60eef32c8135077c3 GitHub, Inc.
https://github.com/ai/nanoid/commit/b0036ed60dc9facd7f1191a50dfb3076500202ac GitHub, Inc.
https://github.com/ai/nanoid/releases/tag/3.3.12 GitHub, Inc.
https://github.com/ai/nanoid/releases/tag/5.1.11 GitHub, Inc.
https://github.com/ai/nanoid/security/advisories/GHSA-xwg4-73v4-xw9w GitHub, Inc.

Weakness Enumeration

CWE-ID CWE Name Source
CWE-190 Integer Overflow or Wraparound GitHub, Inc.  

Change History

1 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2026-73086
NVD Published Date:
08/11/2026
NVD Last Modified:
08/11/2026
Source:
GitHub, Inc.