High severity · published Jul 10, 2026
CVE-2026-54149
MaxKB MCP tool import validation bypass allows post-authentication remote code execution
8.8
CVSS
0.5%
EPSS
No
On KEV
Description
MaxKB is an open-source AI assistant for enterprise. Prior to 2.10.0-lts, MaxKB tool import functionality in apps/tools/serializers/tool.py and MCP referencing mode in apps/application/chat_pipeline/step/chat_step/impl/base_chat_step.py do not consistently validate MCP transport type, allowing an authenticated user to import a .tool file containing stdio transport with malicious commands and trigger the configuration through an AI Chat node so MultiServerMCPClient executes arbitrary system commands. This issue is fixed in version 2.10.0-lts.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.5% · higher than 42% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
MA
MaxKB · 1Panel-dev
< 2.10.0-lts · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-54149
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-54149
github.com
https://github.com/1Panel-dev/MaxKB/releases/tag/v2.10.0-lts
github.com
https://github.com/1Panel-dev/MaxKB/security/advisories/GHSA-4pr3-9xhm-98x5
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