What’s Vulnerable › Vulnerabilities
CVE-2026-44849: Portainer: Endpoint security bypass via Swarm service create/update
- Severity: high (CVSS 8.8 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 0.4% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2026-05-28 · updated 2026-07-21
- Weakness: CWE-862
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.
Affected products
- portainer: from 2.33.0 before 2.33.8; from 2.34.0 before 2.39.1; 2.40.0 — fixed in 2.33.8, 2.39.1
How to fix
Upgrade to a fixed version: portainer 2.33.8, 2.39.1. Check the vendor advisory for mitigations.
References
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