CVE-2026-69253

The full cvelistV5 record. Download as CVE-2026-69253.json.

{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "Flowise",
          "vendor": "FlowiseAI",
          "versions": [
            {
              "status": "affected",
              "version": "< 3.1.3"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "Flowise is a drag-and-drop user interface for building customized large language model (LLM) flows. Prior to version 3.1.3, several custom-tool components \u2014 AgentAsTool, ChatflowTool, and ExecuteFlow \u2014 ran code in the in-process \u00a0vm2\u00a0 sandbox. To build that code, they inserted a user-controlled \u00a0baseURL\u00a0 value straight into the JavaScript source, for example \u00a0const url = \"${baseURL}/...\";\u00a0. The only check on \u00a0baseURL\u00a0 was \u00a0isValidURL\u00a0, but a valid-looking URL can still contain characters that break out of a code string. An authenticated user could craft a \u00a0baseURL\u00a0 that passed this check, closed the surrounding string, and injected their own JavaScript into the sandboxed script (code injection, CWE-94). The \u00a0vm2\u00a0 sandbox runs in the same Node.js process as Flowise and exposes risky dependencies. As a result, the injected code could escape the sandbox and run arbitrary code on the Flowise server as the Flowise process user. Exploitation only requires an authenticated session. The issue is fixed in version 3.1.3, which passes the URL to the sandbox as data instead of inserting it into code and adds stricter URL validation."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "HIGH",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 9,
            "baseSeverity": "CRITICAL",
            "privilegesRequired": "LOW",
            "subAvailabilityImpact": "HIGH",
            "subConfidentialityImpact": "HIGH",
            "subIntegrityImpact": "HIGH",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-95",
              "description": "CWE-95: Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-04T15:13:39.181Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-wg86-r78f-74mp",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-wg86-r78f-74mp"
        },
        {
          "name": "https://github.com/FlowiseAI/Flowise/pull/6417",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/FlowiseAI/Flowise/pull/6417"
        },
        {
          "name": "https://github.com/FlowiseAI/Flowise/commit/3f257bdc8196082a178da7134a075824401b13b9",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/FlowiseAI/Flowise/commit/3f257bdc8196082a178da7134a075824401b13b9"
        },
        {
          "name": "https://github.com/FlowiseAI/Flowise/releases/tag/flowise@3.1.3",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/FlowiseAI/Flowise/releases/tag/flowise@3.1.3"
        }
      ],
      "source": {
        "advisory": "GHSA-wg86-r78f-74mp",
        "discovery": "UNKNOWN"
      },
      "title": "Flowise Sandbox Escape to RCE"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-69253",
    "datePublished": "2026-08-04T15:13:39.181Z",
    "dateReserved": "2026-08-03T19:54:19.853Z",
    "dateUpdated": "2026-08-04T15:13:39.181Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}