What’s Vulnerable › Vulnerabilities
CVE-2021-23018
- Severity: high (CVSS 7.4 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.5% 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-319
Description
Intra-cluster communication does not use TLS. The services within the NGINX Controller 3.x before 3.4.0 namespace are using cleartext protocols inside the cluster.
Affected products
- NGINX Controller: from 3.0.0 through 3.4.0
References
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