What is the CVSS score of CVE-2026-29773?

CVE-2026-29773 has a CVSS 3.1 base score of 4.3 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N. EPSS exploitation probability: 0.0%.

Which versions of Kubernetes are affected by CVE-2026-29773?

Organizations using Kubewarden should be aware of moderate risk from CVE-2026-29773, a incorrect authorization vulnerability rated CVSS 4.3. Attackers could gain access beyond their authorized level.. A patch is available.

How to fix or mitigate CVE-2026-29773?

Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Monitor vendor channels for patch availability.

Kubernetes CVE-2026-29773

MEDIUM

Incorrect Authorization (CWE-863)

2026-03-10 security-advisories@github.com

GHSA-6r7f-3fwq-hq74

Authentication Bypass Privilege Escalation Kubernetes Linuxfoundation Kubewarden

4.3

CVSS 3.1 · GitHub Advisory

Severity by source

GitHub Advisory PRIMARY

4.3 MEDIUM

AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

SUSE

MEDIUM

qualitative

Primary rating from GitHub Advisory.

CVSS VectorGitHub Advisory

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Lifecycle Timeline

Patch released

Mar 31, 2026 - 21:13 nvd

Patch available

Analysis Generated

Mar 12, 2026 - 21:55 vuln.today

CVE Published

Mar 10, 2026 - 17:39 nvd

MEDIUM 4.3

DescriptionGitHub Advisory

Kubewarden is a policy engine for Kubernetes. Kubewarden cluster operators can grant permissions to users to deploy namespaced AdmissionPolicies and AdmissionPolicyGroups in their Namespaces. One of Kubewarden promises is that configured users can deploy namespaced policies in a safe manner, without privilege escalation. An attacker with privileged "AdmissionPolicy" create permissions (which isn't the default) could make use of 3 deprecated host-callback APIs: kubernetes/ingresses, kubernetes/namespaces, kubernetes/services. The attacker can craft a policy that exercises these deprecated API calls and would allow them read access to Ingresses, Namespaces, and Services resources respectively. This attack is read-only, there is no write capability and no access to Secrets, ConfigMaps, or other resource types beyond these three.

AnalysisAI

Kubewarden's deprecated host-callback APIs in AdmissionPolicy can be exploited by authenticated users with policy creation permissions to gain unauthorized read access to cluster-level resources including Ingresses, Namespaces, and Services. An attacker with privileged AdmissionPolicy creation permissions—not a default privilege—could craft malicious policies to bypass intended access controls and enumerate sensitive cluster infrastructure, though this vulnerability is limited to read-only access without write capability or access to Secrets and ConfigMaps. The vulnerability affects Kubernetes deployments using Kubewarden and currently has no available patch.

Technical ContextAI

Classified as CWE-863 (Incorrect Authorization). Kubewarden is a policy engine for Kubernetes. Kubewarden cluster operators can grant permissions to users to deploy namespaced AdmissionPolicies and AdmissionPolicyGroups in their Namespaces. One of Kubewarden promises is that configured users can deploy namespaced policies in a safe manner, without privilege escalation. An attacker with privileged "AdmissionPolicy" create permissions (which isn't the default) could make use of 3 deprecated host-callback APIs: kubernetes/ingresses, kubernetes/na