CVE-2021-23018

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CVSS 3.1

7.4 high

EPSS

<1%p44

Published

Jun 1, 2021 (Jun 1, 2021)

Modified

Jun 17, 2026

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.

Vendors: f5
Products: nginx controller
Weakness: CWE-319
Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

NVD CVE.org GitHub PoCs EPSS (0.5%)

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