CVE-2026-44849

Portainer: Endpoint security bypass via Swarm service create/update

State: Published
Severity: 9.4 Critical
Published: May 28, 2026
Updated: May 29, 2026
Reserved: May 7, 2026

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 enforces seven EndpointSecuritySettings restrictions that administrators configure to restrict the container configurations non-admin users can launch: privileged mode, host PID namespace, device mapping, capabilities, sysctls, security-opt (Seccomp / AppArmor), and bind mounts. These restrictions are enforced on the standard container creation path, but several of them are not applied on the Docker Swarm service API. This vulnerability is fixed in 2.33.8, 2.39.2, and 2.41.0.

Scores

CVSS	Score	Vector	Source
4.0	9.4 Critical	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H	GitHub_M

Weaknesses

CWE-862 Missing Authorization

Affected Products

Product	Versions
portainerportainer	>= 2.33.0, < 2.33.8Affected >= 2.39.0, < 2.39.2Affected >= 2.40.0, < 2.41.0Affected

References

https://github.com/portainer/portainer/security/advisories/GHSA-5fxq-qcf3-244w

Every record here comes from the CVE Program’s CVE List. © 1999–2026 The MITRE Corporation. CVE is a registered trademark of The MITRE Corporation. The records are reproduced under the CVE Program terms of use.