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Vulnerability · Published May 28, 2026 · Assigned by GitHub_M

CVE-2026-44848Portainer: Missing authorization on Docker plugin endpoints allows host RCE

Critical 9.4

In plain English

A critical-severity missing authorization in portainer from portainer. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.4% (higher than 35% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code. Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)9.4Critical
Exploit odds (30 days)0.4%top 65.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack tooling1Public PoC

Official 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, The Docker plugin management endpoints (/plugins/*) were not registered with a handler, so standard users with endpoint access could call privileged plugin operations — including installing and enabling plugins — directly against the underlying Docker daemon. The vulnerability is exposed when a non-admin Portainer user (Standard User role, or any role granted endpoint-level access) has been given access to a Docker endpoint via Portainer RBAC. This vulnerability is fixed in 2.33.8, 2.39.2, and 2.41.0.

Affected packages & fixed versions

EcosystemPackageFixed inAdvisory
Gogithub.com/portainer/portainer2.33.8GHSA-rrmm-9v76-h3p4
Gogithub.com/portainer/portainer2.39.2GHSA-rrmm-9v76-h3p4
Gogithub.com/portainer/portainer2.41.0GHSA-rrmm-9v76-h3p4
Gogithub.com/portainer/portainerno fix listedGO-2026-5639

Affected products (as reported)

VendorProductVersions
portainer portainer >= 2.33.0, < 2.33.8>= 2.39.0, < 2.39.2>= 2.40.0, < 2.41.0

Weakness: CWE-862 · Vector: 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

References