High7.4F5

NGINX: Intra-cluster communication does not use TLS.

CVE-2021-23018 Published Jun 1, 2021Updated by vendor Jun 17, 2026

CVE-2021-23018

Affected products & platforms

F5NGINX

Summary

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 versions

3.4.0

Official advisory · high-confidence parse· fetched 5 hours ago·verify at source

Fixed versions

3.4.0

Official advisory · high-confidence parse· fetched 5 hours ago·verify at source

Mitigation

Mitigation steps weren't captured by the parser for this advisory — this is a parsing gap, not a statement that no fix exists. Read the vendor advisory below for the authoritative guidance.

Official advisory · high-confidence parse· fetched 5 hours ago·verify at source

Discussion(0)

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