Vulnerabilities of Red Hat Red Hat OpenShift Container Platform 4.21

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CVE list

CVE	Summary	Score	Published
CVE-2026-75885	A flaw was found in the OpenShift console	9.3 Critical	Sep 18, 2026
CVE-2026-16242	A flaw was found in the Konnectivity proxy-server configuration for hosted control planes	9.4 Critical	Jul 20, 2026
CVE-2026-44990	ApostropheCMS is an open-source Node.js content management system, and sanitize-html provides a simple HTML sanitizer…	9.3 Critical	Jun 12, 2026
CVE-2026-46316	In the Linux kernel, the following vulnerability has been resolved: KVM: arm64: vgic-its: Drop the translation cache…	9.3 Critical	Jun 9, 2026
CVE-2025-10263	Arm C1-Ultra, C1-Premium, Neoverse V3 & V3AE, Neoverse V2, Neoverse V1, Neoverse-N2, Neoverse-N1, Cortex-X925,…	9.1 Critical	Jun 9, 2026
CVE-2026-4408	Samba: remote code execution in samr	9.0 Critical	May 28, 2026
CVE-2026-39821	The ToASCII and ToUnicode functions incorrectly accept Punycode-encoded labels that decode to an ASCII-only label	9.6 Critical	May 22, 2026
CVE-2026-39830	A malicious SSH peer could send unsolicited global request responses to fill an internal buffer, blocking the…	9.1 Critical	May 22, 2026
CVE-2026-43114	In the Linux kernel, the following vulnerability has been resolved: netfilter: nft_set_pipapo_avx2: don't return…	9.4 Critical	May 6, 2026
CVE-2026-43037	In the Linux kernel, the following vulnerability has been resolved: ip6_tunnel: clear skb2->cb[] in ip4ip6_err() Oskar…	9.8 Critical	May 1, 2026
CVE-2026-33186	gRPC-Go is the Go language implementation of gRPC	9.1 Critical	Mar 20, 2026
CVE-2026-22797	An issue was discovered in OpenStack keystonemiddleware 10.5 through 10.7 before 10.7.2, 10.8 and 10.9 before 10.9.1,…	9.9 Critical	Jan 19, 2026

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