SB2026061128 - Multiple vulnerabilities in Red Hat OpenShift Container Platform 4.15
Published: June 11, 2026
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 2 vulnerabilities.
1) Improper Authorization (CVE-ID: CVE-2026-33186)
CWE-ID: CWE-285 - Improper Authorization
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Amber
The vulnerability allows a remote attacker to gain access to bypass authorization.
The vulnerability exists due to authorization bypass resulting from improper input validation of the HTTP/2 `:path` pseudo-header. A remote attacker can send raw HTTP/2 frames with malformed `:path` headers directly to the gRPC server to bypass authorization.
2) Improper access control (CVE-ID: CVE-2026-35172)
CWE-ID: CWE-284 - Improper Access Control
CVSSv4: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
The vulnerability allows a remote attacker to disclose sensitive information.
The vulnerability exists due to improper access control in the repository-scoped redis blob descriptor cache invalidation logic when handling blob delete and subsequent stat or get operations across repositories. A remote attacker can request the same digest from another repository that still references it to disclose sensitive information.
Only deployments with both redis blob descriptor caching and delete enabled are vulnerable.
Remediation
Install update from vendor's website.