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CVE-2026-73086

7.4 · HIGH

nanoid is a secure, URL-friendly, unique string ID generator for JavaScript.

Published Aug 11, 2026CWE-190EPSS 0.30%

Overview

CVE-2026-73086 is a high-severity vulnerability. It was published on August 11, 2026 and has a CVSS 3.1 base score of 7.4 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.4, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

GitHubgithub.com/ai/nanoid/commit/7087969281cab8ba8ae3babf1894e819068b3bb4GitHubgithub.com/ai/nanoid/commit/821dfed7b5db7f88e92f56c60eef32c8135077c3GitHubgithub.com/ai/nanoid/commit/b0036ed60dc9facd7f1191a50dfb3076500202acGitHubgithub.com/ai/nanoid/releases/tag/3.3.12GitHubgithub.com/ai/nanoid/releases/tag/5.1.11GitHubgithub.com/ai/nanoid/security/advisories/GHSA-xwg4-73v4-xw9w

How CyberStrike helps

Frequently asked questions

What is CVE-2026-73086?

CVE-2026-73086 is a high-severity vulnerability. It was published on August 11, 2026 and has a CVSS 3.1 base score of 7.4 (HIGH).

How severe is CVE-2026-73086?

This vulnerability has a CVSS 3.1 base score of 7.4, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2026-73086?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2026-73086?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2026-73086 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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