CVE-2026-44850 Details
Description
Portainer Community Edition is a lightweight service delivery platform for containerized applications that can be used to manage Docker, Swarm, Kubernetes and ACI environments. From 2.33.0 to before 2.33.8, 2.39.2, and 2.41.0, Portainer offers an environment-level Disable bind mounts for non-administrators security setting that blocks regular users from binding host paths into containers they create through the Portainer-mediated Docker API. The check that enforces this setting only inspected the legacy HostConfig.Binds array on the container-create proxy and never looked at the equivalent HostConfig.Mounts array. Any authenticated user with rights to create containers on a Docker environment where the restriction is enabled could submit a bind-typed entry under HostConfig.Mounts and mount any host path into their container. This vulnerability is fixed in 2.33.8, 2.39.2, and 2.41.0.
A vulnerability exists in Portainer Community Edition versions 2.33.0 prior to 2.33.8, 2.39.0 prior to 2.39.2, and 2.40.0 prior to 2.41.0. The issue arises from the environment-level 'Disable bind mounts for non-administrators' security setting, which is intended to prevent regular users from binding host paths into containers via the Portainer-mediated Docker API. However, the enforcement check only examined the legacy 'HostConfig.Binds' array and overlooked the 'HostConfig.Mounts' array, which is functionally equivalent. As a result, authenticated users with container creation rights could bypass the restriction and mount any host path into their containers, potentially accessing sensitive files or compromising other containers on the same host.
Users should upgrade to Portainer versions 2.33.8, 2.39.2, or 2.41.0. For those unable to upgrade immediately, it is recommended to revoke container-create rights from non-administrator accounts on affected environments, audit recent container creations for bind-type mounts from non-admin users, and segregate tenants by environment.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed May 29, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/portainer/portainer/security/advisories/GHSA-7fw3-x4r2-g7wc | [email protected] | ExploitThird Party Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-863 | Incorrect Authorization | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| portainer portainer | >= 2.33.0, < 2.33.8 >= 2.34.0, < 2.39.1 2.40.0 |
CPE
Remediation
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Change History
5 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jul 21, 2026 | CVE Translated | [email protected] |
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Jun 1, 2026 | Initial Analysis | [email protected] |
| May 28, 2026 | New CVE Received | [email protected] |