Skip to content
OpenAdvisories
Critical · 9.4 Public exploit CVE-2026-44848 EUVD-2026-33064GHSA-rrmm-9v76-h3p4GO-2026-5639

Portainer: Missing authorization on Docker plugin endpoints allows host RCE

Published May 28, 2026 · Updated Jun 1, 2026 · Assigned by GitHub_M

Vendor: portainer Product: portainer Package: github.com/portainer/portainer Ecosystem: Go

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 products

VendorProductAffectedFixed
portainer portainer >= 2.33.0, < 2.33.8, >= 2.39.0, < 2.39.2, >= 2.40.0, < 2.41.0 —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

openSUSE

Security tracker ↗
ReleasePackageFixed inAdvisory
openSUSE Leap 16.0 govulncheck-vulndb 0.0.20260723T184607-160000.1.1 openSUSE-SU-2026:21483-1

Public exploits

Exploit or proof-of-concept code for this vulnerability is publicly available, which lowers the bar for attackers. Treat it as a reason to patch sooner.

Third-party code, not reviewed by us. Public PoCs are sometimes fake or contain malware. Read the code first and run it only in an isolated lab, against systems you are authorised to test.

GitHub 2 repositories

  • Boreas37/CVE-2026-44848-PoC ★ 2 · Aug 18, 2026

    PoC for CVE-2026-44848: Portainer missing authorization on Docker plugin endpoints -> host RCE (GHSA-rrmm-9v76-h3p4). Stdlib-only Python.

  • mnk-works/portainer-cve-2026-44848-checker ★ 0 · Oct 24, 2026

    Non-destructive checker for CVE-2026-44848: Portainer missing authorization on Docker plugin endpoints

Sources: PoC-in-GitHub, Metasploit Framework, Exploit-DB — updated daily. Only links are listed; no exploit code is hosted here.

Affected packages

EcosystemPackageAffectedFixedRecord
Go github.com/portainer/portainer >= 2.33.0, < 2.33.8 2.33.8 GHSA-rrmm-9v76-h3p4
Go github.com/portainer/portainer >= 2.39.0, < 2.39.2 2.39.2 GHSA-rrmm-9v76-h3p4
Go github.com/portainer/portainer >= 2.40.0, < 2.41.0 2.41.0 GHSA-rrmm-9v76-h3p4
Go github.com/portainer/portainer all versions — GO-2026-5639

Advisories 1

References