Missing Authorization Affecting github.com/portainer/portainer/api/http/proxy/factory/docker package, versions >=2.33.0 <2.33.8>=2.39.0 <2.39.2>=2.40.0 <2.41.0
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-GOLANG-GITHUBCOMPORTAINERPORTAINERAPIHTTPPROXYFACTORYDOCKER-16734125
- published18 May 2026
- disclosed14 May 2026
- creditJohannesLks, route2shell
Introduced: 14 May 2026
CVE-2026-44849 (opens in a new tab)How to fix?
Upgrade github.com/portainer/portainer/api/http/proxy/factory/docker to version 2.33.8, 2.39.2, 2.41.0 or higher.
Overview
github.com/portainer/portainer/api/http/proxy/factory/docker is a management UI which allows to manage different Docker environments.
Affected versions of this package are vulnerable to Missing Authorization in the enforcement of endpoint security restrictions for non-admin users on Docker Swarm endpoints. An attacker can gain elevated privileges and access to the host filesystem by creating or updating Swarm services with unrestricted Linux capabilities, sysctls, security options, or bind mounts, bypassing administrator-imposed security policies. This is only exploitable if a non-admin user has been granted access to a Docker Swarm endpoint via RBAC and the administrator has configured restrictions such as AllowContainerCapabilitiesForRegularUsers, AllowSysctlSettingForRegularUsers, AllowSecurityOptForRegularUsers, or AllowBindMountsForRegularUsers.
Workaround
This vulnerability can be mitigated by temporarily revoking Swarm endpoint access for non-admin users via RBAC, segregating manager and worker nodes to limit exposure, or blocking creation of local-driver volumes that use 'type: none' / 'o: bind' on untrusted endpoints via a daemon-side allowlist.