RH
Product
Red Hat OpenShift Container Platform 4.21
On CISA KEVExploited in the wild
80
CVEs
1
On KEV
10.0
Max CVSS
6
New 30D
Severity mix
Critical 14High 57Medium 9Low 0
Watch
Add Red Hat OpenShift Container Platform 4.21 to your stack to get only the CVEs that touch what you run.
| CVE | CVSS | Published | Summary · affected versions |
|---|---|---|---|
| CVE-2026-45736 | 7.5 | May 15 | ws: Uninitialized memory disclosure Affected: All versions, or not specified |
| CVE-2026-39820 | 7.5 | May 7 | Quadratic string concatentation in consumeComment in net/mail Affected: All versions, or not specified |
| CVE-2026-42499 | 7.5 | May 7 | Quadratic string concatenation in consumePhrase in net/mail Affected: All versions, or not specified |
| CVE-2026-33814 | 7.5 | May 7 | Infinite loop in HTTP/2 transport when given bad SETTINGS_MAX_FRAME_SIZE in net/http/internal/http2 in golang.org/x/net Affected: All versions, or not specified |
| CVE-2026-41674 | 7.5 | May 7 | xmldom: XML injection through unvalidated DocumentType serialization Affected: All versions, or not specified |
| CVE-2026-6322 | 7.5 | May 5 | fast-uri vulnerable to host confusion via percent-encoded authority delimiters Affected: All versions, or not specified |
| CVE-2026-42154 | 7.5 | May 4 | Prometheus: remote read endpoint allows denial of service via crafted snappy payload Affected: All versions, or not specified |
| CVE-2026-42151 | 7.5 | May 4 | Prometheus Azure AD remote write OAuth client secret exposed via config API Affected: All versions, or not specified |
| CVE-2026-43003 | 7.5 | May 1 | An issue was discovered in OpenStack ironic-python-agent 1.0.0 through 11.5.0 Affected: All versions, or not specified |
| CVE-2026-42039 | 7.5 | Apr 24 | Axios: unbounded recursion in toFormData causes DoS via deeply nested request data Affected: All versions, or not specified |
| CVE-2026-40895 | 7.5 | Apr 21 | follow-redirects: Custom Authentication Headers Leaked to Cross-Domain Redirect Targets Affected: All versions, or not specified |
| CVE-2026-32283 | 7.5 | Apr 8 | Unauthenticated TLS 1.3 KeyUpdate record can cause persistent connection retention and DoS in crypto/tls Affected: All versions, or not specified |
| CVE-2026-34986 | 7.5 | Apr 6 | Go JOSE affect by a panic in JWE decryption Affected: All versions, or not specified |
| CVE-2026-50236 | 7.4 | Aug 11 | Openshift/console: authenticated ssrf with full response reflection and path neutralization via dev console webhook helpers in openshift console Affected: All versions, or not specified |
| CVE-2026-50237 | 7.4 | Aug 11 | Openshift/console: namespace tenant ssrf with egress bypass, catalog poisoning, and admin-mediated supply chain escalation via projecthelmchartrepository in openshift console Affected: All versions, or not specified |
| CVE-2026-42033 | 7.4 | Apr 24 | Axios: Prototype Pollution Gadgets - Response Tampering, Data Exfiltration, and Request Hijacking Affected: All versions, or not specified |
| CVE-2026-75886 | 7.2 | Sep 23 | Openshift/console: openshift/console: unauthenticated reverse proxy to in-cluster catalogd service with session token forwarding Affected: All versions, or not specified |
| CVE-2026-96577 | 7.1 | Oct 1 | Oc-mirror__release-4.21: embedded local cache registry listens on all interfaces without authentication, with delete enabled Affected: All versions, or not specified |
| CVE-2026-87114 | 7.1 | Sep 28 | Kube-compare: container:// reference extraction runs the image entrypoint and silently escalates to sudo Affected: All versions, or not specified |
| CVE-2026-46243 | 7.1 | Jun 1 | smb: client: reject userspace cifs.spnego descriptions Affected: All versions, or not specified |
| CVE-2025-54518 | 7.0 | May 15 | Improper isolation of shared resources within the CPU operation cache on Zen 2-based products could allow an attacker to corrupt instructions executed at a different privilege… Affected: All versions, or not specified |
| CVE-2026-27145 | 6.5 | Jun 2 | Inefficient candidate hostname parsing in crypto/x509 Affected: All versions, or not specified |
| CVE-2026-42965 | 6.5 | May 29 | Openshift/router: openshift/router: cloud metadata ssrf via fqdn-typed endpointslice bypasses destination validation Affected: All versions, or not specified |
| CVE-2026-1933 | 6.5 | May 27 | Samba: missing access check on reparse point operations Affected: All versions, or not specified |
| CVE-2026-42041 | 6.5 | Apr 24 | Axios: Authentication Bypass via Prototype Pollution Gadget in `validateStatus` Merge Strategy Affected: All versions, or not specified |
| CVE-2026-35469 | 6.5 | Apr 16 | SpdyStream: DOS on CRI Affected: All versions, or not specified |
| CVE-2026-83589 | 6.1 | Oct 1 | Oauth-proxy: open redirect via /\ and /\t bypass in post-login redirect Affected: All versions, or not specified |
| CVE-2026-42338 | 6.1 | May 12 | ip-address: XSS in Address6 HTML-emitting methods Affected: All versions, or not specified |
| CVE-2025-13465 | 5.3 | Jan 21 | Prototype Pollution Vulnerability in Lodash _.unset and _.omit functions Affected: All versions, or not specified |
| CVE-2026-40175 | 4.8 | Apr 10 | Axios has Unrestricted Cloud Metadata Exfiltration via Header Injection Chain Affected: All versions, or not specified |
