How severe is CVE-2026-29773?

CVE-2026-29773 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2026-29773 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-29773?

CVE-2026-29773 affects Linuxfoundation Kubewarden. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-29773?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-29773 have an EU (EUVD) identifier?

Yes. CVE-2026-29773 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-10410.

When was CVE-2026-29773 published?

CVE-2026-29773 was published on 2026-03-10 and last updated on 2026-06-17.

CVE-2026-29773

CVE-2026-29773 is a medium-severity vulnerability in Linuxfoundation Kubewarden with a CVSS 3.x base score of 4.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-863.

Key facts

Severity: Medium (CVSS 3.x base score 4.3)
EPSS exploit prediction: 0% (8th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-10410
Weakness: CWE-863
Affected product: Linuxfoundation Kubewarden
Published: 2026-03-10
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2026-29773?: 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.
How severe is CVE-2026-29773?: CVE-2026-29773 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2026-29773 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (8th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-29773?: CVE-2026-29773 affects Linuxfoundation Kubewarden. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-29773?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-29773 have an EU (EUVD) identifier?: Yes. CVE-2026-29773 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-10410.
When was CVE-2026-29773 published?: CVE-2026-29773 was published on 2026-03-10 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:linuxfoundation:kubewarden:*:*:*:*:*:kubernetes:*:*

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