CVE-2026-33590

Published: May 28, 2026Modified: Jun 17, 2026

8.5

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/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: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/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:XShow less

Source: a6d3dc9e-0591-4a13-bce7-0f5b31ff6158 (Secondary)

Description

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.

Related CWEs

CWE-276

Incorrect Default Permissions

During installation, installed file permissions are set to allow anyone to modify those files.

References (4)

https://github.com/portainer/portainer/commit/3e2fdb1891e81a8e4c5c8beb60e45f07c8ecae52

Source: a6d3dc9e-0591-4a13-bce7-0f5b31ff6158

https://github.com/portainer/portainer/commit/ac8fa7672e732b44b970c9eaf928eddd2c68796c

Source: a6d3dc9e-0591-4a13-bce7-0f5b31ff6158

https://intwave.com/blog/2026/02/26/improving-portainer-security.html

Source: a6d3dc9e-0591-4a13-bce7-0f5b31ff6158

http://www.openwall.com/lists/oss-security/2026/06/12/2

Source: af854a3a-2127-422b-91ae-364da2661108

Timeline

No history available yet.