CVE-2026-44849

HIGH

Portainer: Endpoint security bypass via Swarm service create/update

Title source: cna
STIX 2.1

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.

References (1)

Core 1
Core References

Scores

CVSS v3 8.8
EPSS 0.0030
EPSS Percentile 21.5%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact total

Details

CWE
CWE-862
Status published
Products (8)
portainer/portainer 2.40.0
portainer/portainer 2.33.0 - 2.33.8
portainer/portainer 2.33.0 - 2.33.8Go
portainer/portainer 2.39.0 - 2.39.2Go
portainer/portainer 2.40.0 - 2.41.0Go
portainer/portainer >= 2.33.0, < 2.33.8
portainer/portainer >= 2.39.0, < 2.39.2
portainer/portainer >= 2.40.0, < 2.41.0
Published May 28, 2026
Tracked Since May 29, 2026