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It was found in OpenShift before version 4.8 that the generated certificate for the in-cluster Service CA incorrectly included additional certificates. The Service CA is automatically mounted into all pods allowing them to safely connect to trusted in-cluster services that present certificates signed by the trusted Service CA. The incorrect inclusion of additional CAs in this certificate would allow an attacker that compromises any of the additional CAs to masquerade as a trusted in-cluster service.
| Reporter | Title | Published | Views | Family All 17 |
|---|---|---|---|---|
 | Security Bulletin: Red Hat OpenShift on IBM Cloud is affected by an OpenShift security vulnerability (CVE-2021-3636) | 17 Nov 202115:55 | – | ibm |
 | Red Hat OpenShift 授权问题漏洞 | 14 Jul 202100:00 | – | cnnvd |
 | Red Hat OpenShift has unexplained holes | 15 Jul 202100:00 | – | cnvd |
 | CVE-2021-3636 | 30 Jul 202119:27 | – | cve |
 | CVE-2021-3636 | 30 Jul 202119:27 | – | cvelist |
 | EUVD-2021-26937 | 7 Oct 202500:30 | – | euvd |
 | CVE-2021-3636 | 30 Jul 202120:15 | – | nvd |
 | CVE-2021-3636 | 30 Jul 202120:15 | – | osv |
| RHSA-2021:2437 Red Hat Security Advisory: OpenShift Container Platform 4.8.2 packages and security update | 18 Sep 202404:18 | – | osv |
 | Code injection | 30 Jul 202120:15 | – | prion |
10
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18 Feb 2026 10:23Current
7High risk
Vulners AI Score7
CVSS 24.1
CVSS 3.14.6
EPSS0.00031