Incorrect Authorization Affecting github.com/portainer/portainer/api/http/handler/kubernetes package, versions >=2.33.0 <2.33.8>=2.34.0 <2.39.0
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Start learning- Snyk IDSNYK-GOLANG-GITHUBCOMPORTAINERPORTAINERAPIHTTPHANDLERKUBERNETES-16733928
- published18 May 2026
- disclosed14 May 2026
- creditkolega-ai-dev
Introduced: 14 May 2026
NewCVE-2026-44882 (opens in a new tab)How to fix?
Upgrade github.com/portainer/portainer/api/http/handler/kubernetes to version 2.33.8, 2.39.0 or higher.
Overview
Affected versions of this package are vulnerable to Incorrect Authorization in the kubeClientMiddleware process. An attacker can gain unauthorized access to Kubernetes resources by sending requests with a valid session but insufficient permissions, which are incorrectly forwarded to the cluster due to missing authorization enforcement. This can allow reading or modifying sensitive cluster data.
Workaround
This vulnerability can be mitigated by restricting Kubernetes endpoint access to only necessary users and auditing the RBAC permissions of the service account used for proxying cluster requests.