Red Hat Security AdvisoryRHSA-2026:57801
OpenShift Container Platform 4.21.30 bug fix and security update
Released 2026-08-25 · Red Hat rating Important · View on Red Hat →
Fixed in
- Red Hat OpenShift Container Platform 4.21 registry.redhat.io/openshift4/frr-rhel9, registry.redhat.io/openshift4/ose-agent-installer-ui-rhel9, registry.redhat.io/openshift4/ose-console-rhel9 +2
Fixes 8 records
Priority HIGH 77
form-data is a library for creating readable multipart/form-data streams.
CVSS 4.0HIGH 8.7· Network · No auth · No interaction · EPSS 0.00669 · Published 2026-06-12 · Partial fix · 2.5.6, 3.0.5 +1 CWE-93
Priority MEDIUM 48
The Verify() method for FIDO/U2F security key types ([email protected], [email protected]) did not check the User Presence flag.
CVSS 3.1CRITICAL 9.1· Network · No auth · No interaction · EPSS 0.00478 · Published 2026-05-22 · Partial fix · 0.52.0 CWE-862
Priority MEDIUM 46
A malicious SSH peer could send unsolicited global request responses to fill an internal buffer, blocking the connection's read loop.
CVSS 3.1CRITICAL 9.1· Network · No auth · No interaction · EPSS 0.00683 · Published 2026-05-22 · Partial fix · 0.52.0 CWE-119
Priority MEDIUM 40
If one side of the TLS connection sends multiple key update messages post-handshake in a single record, the connection can deadlock, causing uncontrolled consumption of resources.
CVSS 3.1HIGH 7.5· Network · No auth · No interaction · EPSS 0.00632 · Published 2026-04-08 · Partial fix · 1.25.9, 1.26.2 CWE-770
Priority MEDIUM 40
brace-expansion through 5.0.7 is vulnerable to denial of service via memory exhaustion.
CVSS 3.1HIGH 7.5· Network · No auth · No interaction · EPSS 0.00643 · Published 2026-07-23 · Partial fix · 5.0.8, 3.0.3 +2 CWE-400
Priority LOW 39
An incorrectly placed cast from bytes to int allowed for server-side panic in the AES-GCM packet decoder for well-crafted inputs.
CVSS 3.1HIGH 7.5· Network · No auth · No interaction · EPSS 0.00473 · Published 2026-05-22 · Partial fix · 0.52.0 CWE-704
Priority LOW 39
An issue was discovered in OpenStack ironic-python-agent 1.0.0 through 11.5.0.
CVSS 3.1HIGH 8.0· Adjacent network · Low privileges · No interaction · EPSS 0.00983 · Published 2026-05-01 · Partial fix · 10.2.3, 11.2.1 +2 CWE-829
Priority LOW 39
The RSA and DSA public key parsers did not enforce size limits on key parameters.
CVSS 3.1HIGH 7.5· Network · No auth · No interaction · EPSS 0.00467 · Published 2026-05-22 · Partial fix · 0.52.0 CWE-347