CVE-2026-29773Network attack vector

Cross-namespace resource disclosure via deprecated host callbacks

Published Mar 9, 2026 · Updated Mar 9, 2026

Incorrect authorization in Kubewarden kubewarden-controller before 1.33.0 allows remote authenticated users to read cross-namespace resources. The host_callback dispatcher in crates/policy-evaluator/src/runtimes/callback.rs routes three deprecated Kubernetes bindings to unrestricted KubernetesListResourceAll requests without the context-aware permission gate. Exploitation requires non-default AdmissionPolicy creation permission and exposes only Ingresses, Namespaces, and Services to read access, with no write access or access to Secrets or ConfigMaps.

CVSS severity4.3
Medium
EPSS probability0.18%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect authorization in Kubewarden kubewarden-controller before 1.33.0 allows remote authenticated users to read cross-namespace resources. The host_callback dispatcher in crates/policy-evaluator/src/runtimes/callback.rs routes three deprecated Kubernetes bindings to unrestricted KubernetesListResourceAll requests without the context-aware permission gate. Exploitation requires non-default AdmissionPolicy creation permission and exposes only Ingresses, Namespaces, and Services to read access, with no write access or access to Secrets or ConfigMaps.

The record

CVE
CVE-2026-29773
Published
Mar 9, 2026
Updated
Mar 9, 2026
Vendor
Kubewarden
Product
kubewarden-controller
Classifications
CWE-863, T1613
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 9, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 9, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 1.33.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Kubewarden · kubewarden-controllerversion=< 1.33.0

Published CVSS scores

4.3GitHubCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-863Incorrect Authorization
T1613Container and Resource Discovery

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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