Threats Tagged 'cve-2026-15927'

Red Hat Quay 3.15.8 contains a Server-Side Request Forgery (SSRF) vulnerability in its repository-level mirror configuration feature. An authenticated repository administrator can exploit this flaw by providing a crafted hostname, causing the Quay mirror worker to make unauthorized requests to internal network services or cloud metadata endpoints. This could expose sensitive internal resources. The vulnerability requires administrator privileges and network egress restrictions or disabling the feature can mitigate the risk.

Red Hat OpenShift Container Platform is Red Hat's cloud computing Kubernetes application platform solution designed for on-premise or private cloud deployments. This advisory contains the RPM packages for Red Hat OpenShift Container Platform 4.17.57. See the following advisory for the container images for this release: https://access.redhat.com/errata/RHSA-2026:60023 Security Fix(es): * golang.org/x/crypto/ssh: golang.org/x/crypto/ssh: Denial of Service via crafted AES-GCM packet decoder inputs (CVE-2026-46597) * net/http/internal/http2: golang: golang.org/x/net: Go HTTP/2: Denial of Service via malformed SETTINGS_MAX_FRAME_SIZE frame (CVE-2026-33814) * js-yaml: js-yaml: Denial of Service via crafted YAML documents (CVE-2026-59869) * mime: golang: Golang MIME: Denial of Service via maliciously-crafted MIME header (CVE-2026-42504) * net: golang: Go net package: Denial of Service via long CNAME response in LookupCNAME (CVE-2026-33811) * crypto/x509: golang: golang crypto/x509: Denial of Service via excessive processing of DNS SAN entries (CVE-2026-27145) * brace-expansion: Brace-expansion: Denial of Service due to exponential-time complexity (CVE-2026-13149) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section. All OpenShift Container Platform 4.17 users are advised to upgrade to these updated packages and images when they are available in the appropriate release channel. To check for available updates, use the OpenShift CLI (oc) or web console. Instructions for upgrading a cluster are available at https://docs.redhat.com/en/documentation/openshift_container_platform/4.17/html-single/updating_clusters/index#updating-cluster-cli.

A flaw was found in Red Hat Quay's repository-level mirror configuration feature. The POST and PUT handlers in endpoints/api/mirror.py accept an external_reference parameter without SSRF validation, unlike the organization-level mirror handlers which apply validate_external_registry_url(). A repository administrator can supply a crafted hostname that causes the Quay mirror worker to make requests via Skopeo to internal network services, cloud metadata endpoints, or other resources not intended to be reachable from the Quay application.