CVE-2026-44849criticalCWE-862

CVE-2026-44849: critical vulnerability in portainer

Portainer: Endpoint security bypass via Swarm service create/update

Published · Updated

Follow this CVE+ Monitor portainer+ Monitor github.com/portainer/portainer

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

28Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 9.4epss 0.4%
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:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Affected products
portainer · portainer
Related CVEs — portainer

In the same product, most dangerous first.

CVE-2026-44885MEDIUMPortainer: Path traversal in backup archive extraction allows arbitrary file writeEPSS 0.6%CVE-2026-44881HIGHPortainer: Arbitrary File Read via Git Symlink Injection in Stack Auto-UpdateEPSS 0.5%CVE-2026-55761HIGHPortainer: Unauthenticated Restore Endpoint Allows Admin Takeover on Uninitialised Portainer InstancesEPSS 0.5%CVE-2026-44848CRITICALPortainer: Missing authorization on Docker plugin endpoints allows host RCEEPSS 0.4%CVE-2025-49593MEDIUMPortainer HTTP Headers May Leak to Malicious Container RegistriesEPSS 0.4%CVE-2026-44882HIGHPortainer: Kubernetes middleware continues after token validation failure, bypassing endpoint authorizationEPSS 0.3%