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CVE

CVE-2026-77521

MaxKB: Prompt-injectable agent can lead to command execution
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CVE

CVE-2026-77521

MaxKB: Prompt-injectable agent can lead to command execution

MaxKB is an open-source AI assistant for enterprise. Prior to version 2.10.5-lts, assistants with a tool, MCP tool, skill, or sub-application use SandboxShellBackend, which exposes an execute shell tool without excluding it and omits execute from interrupton, so human approval is not required. Untrusted chat or ingested content can therefore cause command execution; source deployments with MAXKBSANDBOX disabled run commands directly as the application user, while the official root container's string-based gosu wrapper allowed shell metacharacters to execute outside the intended sandbox. This issue is fixed in version 2.10.5-lts.

Package Versions Affected

Package Version
patch Availability
No items found.

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CVSS Version

Severity
Base Score
CVSS Version
Score Vector
C
H
U
10
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
C
H
U
0
-
3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
C
H
U
-

Related Resources

No items found.

References

https://github.com/1Panel-dev/MaxKB/releases/tag/v2.10.5-lts, https://github.com/1Panel-dev/MaxKB/security/advisories/GHSA-f36j-f34j-h3rx, https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/77xxx/CVE-2026-77521.json, https://nvd.nist.gov/vuln/detail/CVE-2026-77521, https://github.com/1Panel-dev/MaxKB/commit/594f50f2ea80a502d1c955371ba0438b277c30ea

Severity

10

CVSS Score
0
10

Basic Information

Base CVSS
10
EPSS Probability
0.01049%
EPSS Percentile
0.63709%
Introduced Version
0
Fix Available
01b21db88145278d98bf5e9bd55e6abd6b3aad43

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