CVE-2026-33590
HighCVSS 8.5Exploitation Probability (EPSS)
Low risk18th percentile - higher than 18% of all known CVEs
Summary
The 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.
Risk Assessment
The organization is at risk of unauthorized access to sensitive data and the potential execution of malicious code on the server, which could lead to serious security breaches.
Recommendation
It is recommended to review and adjust the default settings of Portainer CE to restrict the privileges of non-administrative users and implement additional security measures.
Other vulnerabilities in Portainer CE
See all- CVE-2026-72533High
An authentication bypass vulnerability in Portainer CE through 2.44.0 allows authenticated low-privileged users to bypass Docker proxy authorization checks via non-canonical URL normalization, defeating all authorization middleware. The proxy endpoint fails to normalize request paths before applying access controls, allowing crafted requests to be interpreted differently by the proxy and the authorization layer.
- CVE-2024-29296Medium
A user enumeration vulnerability was found in Portainer CE 2.19.4. During the authentication process, a difference in response time allows a remote unauthenticated attacker to determine if a username is valid.
Original NVD description (English source)
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.