{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-77521", "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "state": "PUBLISHED", "assignerShortName": "GitHub_M", "dateReserved": "2026-08-20T20:23:02.507Z", "datePublished": "2026-09-21T20:45:14.750Z", "dateUpdated": "2026-09-22T13:32:19.198Z"}, "containers": {"cna": {"title": "MaxKB: Prompt-injectable agent can lead to command execution", "problemTypes": [{"descriptions": [{"cweId": "CWE-78", "lang": "en", "description": "CWE-78: Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-250", "lang": "en", "description": "CWE-250: Execution with Unnecessary Privileges", "type": "CWE"}]}, {"descriptions": [{"cweId": "CWE-749", "lang": "en", "description": "CWE-749: Exposed Dangerous Method or Function", "type": "CWE"}]}], "metrics": [{"cvssV3_1": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 10, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}}], "references": [{"name": "https://github.com/1Panel-dev/MaxKB/security/advisories/GHSA-f36j-f34j-h3rx", "tags": ["x_refsource_CONFIRM"], "url": "https://github.com/1Panel-dev/MaxKB/security/advisories/GHSA-f36j-f34j-h3rx"}, {"name": "https://github.com/1Panel-dev/MaxKB/commit/594f50f2ea80a502d1c955371ba0438b277c30ea", "tags": ["x_refsource_MISC"], "url": "https://github.com/1Panel-dev/MaxKB/commit/594f50f2ea80a502d1c955371ba0438b277c30ea"}, {"name": "https://github.com/1Panel-dev/MaxKB/releases/tag/v2.10.5-lts", "tags": ["x_refsource_MISC"], "url": "https://github.com/1Panel-dev/MaxKB/releases/tag/v2.10.5-lts"}], "affected": [{"vendor": "1Panel-dev", "product": "MaxKB", "versions": [{"version": "< 2.10.5-lts", "status": "affected"}]}], "providerMetadata": {"orgId": "a0819718-46f1-4df5-94e2-005712e83aaa", "shortName": "GitHub_M", "dateUpdated": "2026-09-21T20:45:14.750Z"}, "descriptions": [{"lang": "en", "value": "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 interrupt_on, so human approval is not required. Untrusted chat or ingested content can therefore cause command execution; source deployments with MAXKB_SANDBOX 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."}], "source": {"advisory": "GHSA-f36j-f34j-h3rx", "discovery": "UNKNOWN"}}, "adp": [{"references": [{"url": "https://github.com/1Panel-dev/MaxKB/security/advisories/GHSA-f36j-f34j-h3rx", "tags": ["exploit"]}], "metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-09-22T13:31:58.194506Z", "id": "CVE-2026-77521", "options": [{"Exploitation": "poc"}, {"Automatable": "yes"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-09-22T13:32:19.198Z"}}]}}

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{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "semver", "value": "[0,2.10.5-lts)"}}], "enrichment": {"confidence": 86.0, "confidence_source": "matching", "scores": [{"score": 86.0, "source": "matching"}]}, "original": {"product": "MaxKB", "source": "cna", "vendor": "1Panel-dev"}, "product": "maxkb", "vendor": "1panel"}], "created": "2026-09-21T23:00:12.485666+00:00", "updated": "2026-09-22T19:17:02.917188+00:00", "vendors": ["1panel", "1panel$PRODUCT$maxkb"]}