What’s Vulnerable › Vulnerabilities

CVE-2021-23020

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-06-01 · updated 2026-06-17
• Weakness: CWE-330

Description

The NAAS 3.x before 3.10.0 API keys were generated using an insecure pseudo-random string and hashing algorithm which could lead to predictable keys.

Affected products

• NGINX Controller: from 3.0.0 before 3.10.0 — fixed in 3.10.0

How to fix

Upgrade to a fixed version: NGINX Controller 3.10.0. Check the vendor advisory for mitigations.

References

• https://support.f5.com/csp/article/K45263486
• https://support.f5.com/csp/article/K45263486

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