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fkie_cve-2026-66797

Improper access control in CloudStack's annotation functionality allows unauthorized comment creation and disclosure.

The addAnnotation and listAnnotation APIs perform an ownership check when an entity's UUID is specified, but fail to honor its result correctly. This lets any authenticated user write annotations to, and disclose existing annotations/comments on, an entity they don't own by simply supplying its UUID.

This issue affects Apache CloudStack: from 4.15.0.0 through 4.20.3.0 and from 4.21.0.0 through 4.22.1.0.

Users are recommended to upgrade to version 4.20.3.1 or 4.22.1.1 or later, which fixes the issue.

GHSA-6777-p72p-347g

Improper access control in CloudStack's annotation functionality allows unauthorized comment creation and disclosure.

This issue affects Apache CloudStack: from 4.15.0.0 through 4.20.3.0 and from 4.21.0.0 through 4.22.1.0.

Users are recommended to upgrade to version 4.20.3.1 or 4.22.1.1 or later, which fixes the issue.

NCSC-2026-0332 — Kwetsbaarheden verholpen in Apache CloudStack

NCSC-2026-0332

RHSA-2026:60386 — Red Hat Security Advisory: Red Hat Advanced Cluster Management for Kubernetes v2.17.1 security update

multicluster-operators-subscription: multicluster-operators-subscription: namespace edit user can deploy cluster-scoped ClusterRoleBinding and become cluster-admin via Application Subscription fast-uri: fast-uri: Security policy bypass due to improper Unicode hostname canonicalization github.com/hashicorp/memberlist: HashiCorp memberlist: Denial of Service via push/pull state handling volsync-addon-controller: volsync-addon-controller: annotation values rendered into YAML via text/template without escaping allows YAML injection into Subscription golang.org/x/net/html: golang: golang.org/x/net/html: Cross-Site Scripting via HTML parsing bypass crypto/x509: golang: golang crypto/x509: Denial of Service via excessive processing of DNS SAN entries grafana: Grafana: Privilege escalation via dashboard overwrite github.com/prometheus/prometheus: Prometheus: Information disclosure of Azure OAuth client secret via config API github.com/prometheus/prometheus: Prometheus: Denial of Service via uncontrolled memory allocation in remote read endpoint golang.org/x/net/html: golang: golang.org/x/net/html: Cross-Site Scripting via unexpected HTML tree rendering github.com/go-git/go-billy: Billy: Denial of Service via crafted input due to insufficient validation sanitize-html: `sanitize-html`: Stored Cross-Site Scripting via HTML sanitizer bypass postcss: PostCSS: Information disclosure and denial of service via crafted CSS input github.com/hamba/avro/v2: github.com/linkedin/goavro/v2: Intege…