CVE-2026-33590 HIGH

CVE-2026-33590: Insecure default permissions in Portainer CE

Vendor Portainer
Product Portainer Community Edition
Weakness CWE-276
Published May 28, 2026
Last update June 12, 2026

CVSS base score

8.5/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction
Confidentiality
Integrity

CVSS vector

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:P

What the vulnerability does

01Description

Insecure default settings of Portainer CE grant regular (non-admin) users privileges that allow host filesystem access and host-level code execution. An authenticated non-administrative user with endpoint access can exploit these settings to read host files or obtain root equivalent access on the host.

Key dates

02Disclosure timeline

May 28, 2026 CVE published
June 12, 2026 Record updated