CVE-2026-33590 json
Insecure default permissions in Portainer CE
published 2026-05-28 5 mo ago modified 2026-10-26 14 d ago also EUVD-2026-33007
- cvss
- 8.5
- version 4.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.5%
- EPSS 0.5% chance of exploitation in 30 days, percentile 39%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- Portainer Portainer Community Edition 2.38.0, 2.39.0
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 5 mo ago
Exploit prediction
0.45% chance of exploitation in the next 30 days, higher than 39% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 8.5 | 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 |
| CNA | 4.0 | 8.5 | 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 |
Affected products
- Portainer Portainer Community Edition
Classification
- Weakness
-
- CWE-276 Incorrect Default Permissions
References
-
github.com
/portainer/portainer/commit/ac8fa7672e732b44b970c9eaf928eddd2c68796c
issue-tracking
-
github.com
/portainer/portainer/commit/3e2fdb1891e81a8e4c5c8beb60e45f07c8ecae52
issue-tracking
-
intwave.com
/blog/2026/02/26/improving-portainer-security.html
third-party-advisory
- openwall.com /lists/oss-security/2026/06/12/2
Sources
- CVE List CVE-2026-33590
- NVD CVE-2026-33590
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.