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Critical 9.4Published May 28, 2026

CVE-2026-44849Portainer: Endpoint security bypass via Swarm service create/update

Updated under an hour ago ()

Does this affect you?

It affects portainer. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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.

CVSS
9.4 CRITICAL (v4.0, CNA)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
Weakness (CWE)
CWE-862
Known exploited
Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days)
Not loaded for this CVE
Assigned by
GitHub_M
NVD analysis
Analyzed
Record last updated
May 29, 2026
First seen by InfoSec Signals
Oct 9, 2026

Affected products

Affected products
portainer portainer
portainer:portainer (from the name)
from 2.33.0, < 2.33.8; from 2.39.0, < 2.39.2; from 2.40.0, < 2.41.0
CNA record
portainer portainer
portainer:portainer
from 2.33.0 before 2.33.8; from 2.34.0 before 2.39.1; 2.40.0
NVD

References

References

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.

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