CVE-2026-29773 (GCVE-0-2026-29773)
Vulnerability from cvelistv5
Published
2026-03-09 22:23
Modified
2026-03-10 14:31
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-863 - Incorrect Authorization
Summary
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.
References
| URL | Tags | |
|---|---|---|
|
|
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Impacted products
| Vendor | Product | Version | ||
|---|---|---|---|---|
| kubewarden | kubewarden-controller |
Version: < 1.33.0 |
{
"containers": {
"adp": [
{
"metrics": [
{
"other": {
"content": {
"id": "CVE-2026-29773",
"options": [
{
"Exploitation": "none"
},
{
"Automatable": "no"
},
{
"Technical Impact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2026-03-10T14:31:41.500373Z",
"version": "2.0.3"
},
"type": "ssvc"
}
}
],
"providerMetadata": {
"dateUpdated": "2026-03-10T14:31:47.680Z",
"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"shortName": "CISA-ADP"
},
"title": "CISA ADP Vulnrichment"
}
],
"cna": {
"affected": [
{
"product": "kubewarden-controller",
"vendor": "kubewarden",
"versions": [
{
"status": "affected",
"version": "\u003c 1.33.0"
}
]
}
],
"descriptions": [
{
"lang": "en",
"value": "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\u0027t 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. \nThis attack is read-only, there is no write capability and no access to Secrets, ConfigMaps, or other resource types beyond these three."
}
],
"metrics": [
{
"cvssV3_1": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 4.3,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N",
"version": "3.1"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"cweId": "CWE-863",
"description": "CWE-863: Incorrect Authorization",
"lang": "en",
"type": "CWE"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2026-03-09T22:24:55.471Z",
"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"shortName": "GitHub_M"
},
"references": [
{
"name": "https://github.com/kubewarden/kubewarden-controller/security/advisories/GHSA-6r7f-3fwq-hq74",
"tags": [
"x_refsource_CONFIRM"
],
"url": "https://github.com/kubewarden/kubewarden-controller/security/advisories/GHSA-6r7f-3fwq-hq74"
},
{
"name": "https://github.com/kubewarden/kubewarden-controller/pull/1519",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/kubewarden/kubewarden-controller/pull/1519"
},
{
"name": "https://github.com/kubewarden/kubewarden-controller/commit/4e41b60ae44902d82d94101bac93fb77cae65651",
"tags": [
"x_refsource_MISC"
],
"url": "https://github.com/kubewarden/kubewarden-controller/commit/4e41b60ae44902d82d94101bac93fb77cae65651"
}
],
"source": {
"advisory": "GHSA-6r7f-3fwq-hq74",
"discovery": "UNKNOWN"
},
"title": "kubewarden-controller cross-namespace data exfiltration via deprecated host callback binding"
}
},
"cveMetadata": {
"assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
"assignerShortName": "GitHub_M",
"cveId": "CVE-2026-29773",
"datePublished": "2026-03-09T22:23:57.793Z",
"dateReserved": "2026-03-04T16:26:02.897Z",
"dateUpdated": "2026-03-10T14:31:47.680Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.2"
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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