High severity7.4NVD Advisory· Published Jun 1, 2021· Updated Jun 17, 2026
CVE-2021-23018
CVE-2021-23018
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
2- NGINX/NGINX Controllerdescription
- Range: <3.4.0
Patches
Vulnerability mechanics
References
1- support.f5.com/csp/article/K97002210nvdVendor Advisory
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