Vulnerability Report

CVE-2026-44848

Title: Portainer Privilege Escalation via Docker Plugin Management

Other

Proof Of Concept

PoC Available for CVE-2026-44848

CWE Category CWE-862

Published Date May 28, 2026

Modified Date Jul 21, 2026

Exploit Status Available

Score 9.4 CVSS v4.0

Exploit Probability (EPSS)

0.45%

Vulnerability Summary

CVE-2026-44848: 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.

Impacted Vendors

portainer 1

Reference Links

https://github.com/portainer/portainer/security/advisories/GHSA-rrmm-9v76-h3p4

CVSS v4.0

Source Entity [email protected]

Severity CRITICAL

9.4

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

N/A

RAW 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

CVSS v3.1

Source Entity [email protected]

Severity HIGH

8.8