1Panel-dev MaxKB up to 2.7.x Service injection

Summaryinfo

A vulnerability, which was classified as problematic, was found in 1Panel-dev MaxKB up to 2.7.x. Affected by this issue is some unknown functionality of the component Service. Executing a manipulation can lead to injection. This vulnerability is handled as CVE-2026-39419. The attack can be executed remotely. There is not any exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in 1Panel-dev MaxKB up to 2.7.x. It has been declared as problematic. This vulnerability affects some unknown functionality of the component Service. The manipulation with an unknown input leads to a injection vulnerability. The CWE definition for the vulnerability is CWE-74. The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. As an impact it is known to affect integrity. CVE summarizes:

MaxKB is an open-source AI assistant for enterprise. In versions 2.7.1 and below, an authenticated user can bypass sandbox result validation and spoof tool execution results by exploiting Python frame introspection to read the wrapper's UUID from its bytecode constants, then writing a forged result directly to file descriptor 1 (bypassing stdout redirection). By calling sys.exit(0), the attacker terminates the wrapper before it prints the legitimate output, causing the MaxKB service to parse and trust the spoofed response as the genuine tool result. This issue has been fixed in version 2.8.0.

The advisory is available at github.com. This vulnerability was named CVE-2026-39419 since 04/07/2026. The exploitation appears to be difficult. The attack can be initiated remotely. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1055 by the MITRE ATT&CK project.

Upgrading to version 2.8.0 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 38c4cfecd065293ede0437f6fa76cf0116591d25 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.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Vendor

• 1Panel-dev

Name

• MaxKB

Version

• 2.0
• 2.1
• 2.2
• 2.3
• 2.4
• 2.5
• 2.6
• 2.7

License

• open-source

Website

• Product: https://github.com/1Panel-dev/MaxKB/

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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