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        "metrics": [
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              "content": {
                "id": "CVE-2026-56274",
                "options": [
                  {
                    "Exploitation": "poc"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-23T13:05:16.597724Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
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        "providerMetadata": {
          "dateUpdated": "2026-06-23T13:05:20.491Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
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          {
            "tags": [
              "exploit"
            ],
            "url": "https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-m99r-2hxc-cp3q"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "packageURL": "pkg:npm/flowise",
          "product": "Flowise",
          "vendor": "Flowise",
          "versions": [
            {
              "lessThan": "3.1.2",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
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            {
              "status": "unaffected",
              "version": "3.1.2",
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          "packageURL": "pkg:npm/flowise-components",
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      "datePublic": "2026-05-14T00:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "Flowise before 3.1.2 contains multiple OS command injection vulnerabilities in the Custom MCP Server feature due to incomplete command-flag validation and a regex bypass in local file access restrictions. An attacker with a Flowise account of any role, or API access with view/update permissions for chatflows, can configure a malicious MCP server to bypass the validateCommandFlags blocklist (for example, \u0027docker build\u0027 is not blocked, and \u0027npx --yes\u0027 is not blocked while only \u0027-y\u0027 is) and the validateArgsForLocalFileAccess checks, resulting in execution of arbitrary commands on the Flowise host."
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            "attackRequirements": "NONE",
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            "baseSeverity": "HIGH",
            "privilegesRequired": "LOW",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
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            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH"
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            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
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            "scope": "CHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
            "version": "3.1"
          },
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      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-78",
              "description": "Improper Neutralization of Special Elements used in an OS Command (\u0027OS Command Injection\u0027)",
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              "type": "CWE"
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      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-24T11:17:02.895Z",
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        "shortName": "VulnCheck"
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      "references": [
        {
          "name": "GitHub Security Advisory (GHSA-m99r-2hxc-cp3q)",
          "tags": [
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          ],
          "url": "https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-m99r-2hxc-cp3q"
        },
        {
          "name": "VulnCheck Advisory: Flowise - Remote Code Execution via MCP Security Bypass in validateCommandFlags and validateArgsForLocalFileAccess",
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.vulncheck.com/advisories/flowise-remote-code-execution-via-mcp-security-bypass-in-validatecommandflags-and-validateargsforlocalfileaccess"
        }
      ],
      "title": "Flowise - Remote Code Execution via MCP Security Bypass in validateCommandFlags and validateArgsForLocalFileAccess",
      "x_generator": {
        "engine": "vulncheck-endgame"
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    "assignerShortName": "VulnCheck",
    "cveId": "CVE-2026-56274",
    "datePublished": "2026-06-23T12:13:00.703Z",
    "dateReserved": "2026-06-20T01:47:54.000Z",
    "dateUpdated": "2026-06-24T11:17:02.895Z",
    "state": "PUBLISHED"
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  "dataVersion": "5.2"
}