Portainer Community Edition up to 2.37.x/2.38.x default permission

Summaryinfo

A vulnerability classified as critical was found in Portainer Community Edition up to 2.37.x/2.38.x. The affected element is an unknown function. Executing a manipulation can lead to default permission. This vulnerability is handled as CVE-2026-33590. The attack can be executed remotely. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability was found in Portainer Community Edition up to 2.37.x/2.38.x. It has been declared as critical. This vulnerability affects an unknown function. The manipulation with an unknown input leads to a default permission vulnerability. The CWE definition for the vulnerability is CWE-276. During installation, installed file permissions are set to allow anyone to modify those files. As an impact it is known to affect confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is shared for download at intwave.com. This vulnerability was named CVE-2026-33590 since 03/23/2026. The exploitation appears to be easy. The attack can be initiated remotely. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1222.

Upgrading to version 2.38.0 or 2.39.0 eliminates this vulnerability. Applying the patch 3e2fdb1891e81a8e4c5c8beb60e45f07c8ecae52 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-33007). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Vendor

• Portainer

Name

• Community Edition

Version

• 2.0
• 2.1
• 2.2
• 2.3
• 2.4
• 2.5
• 2.6
• 2.7
• 2.8
• 2.9
• 2.10
• 2.11
• 2.12
• 2.13
• 2.14
• 2.15
• 2.16
• 2.17
• 2.18
• 2.19
• 2.20
• 2.21
• 2.22
• 2.23
• 2.24
• 2.25
• 2.26
• 2.27
• 2.28
• 2.29
• 2.30
• 2.31
• 2.32
• 2.33
• 2.34
• 2.35
• 2.36
• 2.37
• 2.38

License

• open-source

CPE 2.3info

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CPE 2.2info

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Entryinfo

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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