{
  "containers": {
    "cna": {
      "affected": [
        {
          "cpes": [
            "cpe:2.3:a:ibm:langflow_oss:1.0.0:*:*:*:*:*:*:*",
            "cpe:2.3:a:ibm:langflow_oss:1.11.1:*:*:*:*:*:*:*"
          ],
          "product": "Langflow OSS",
          "vendor": "IBM",
          "versions": [
            {
              "lessThanOrEqual": "1.11.1",
              "status": "affected",
              "version": "1.0.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eIBM Langflow OSS 1.0.0 through 1.11.1 could allow a remote attacker to obtain sensitive information and inject unauthorized messages due to a namespace collision between user identifiers.\u003c/p\u003e"
            }
          ],
          "value": "IBM Langflow OSS 1.0.0 through 1.11.1 could allow a remote attacker to obtain sensitive information and inject unauthorized messages due to a namespace collision between user identifiers."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 8.2,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-639",
              "description": "CWE-639 Authorization Bypass Through User-Controlled Key",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-28T20:52:08.372Z",
        "orgId": "9a959283-ebb5-44b6-b705-dcc2bbced522",
        "shortName": "ibm"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory",
            "patch"
          ],
          "url": "https://www.ibm.com/support/pages/node/7284579"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cp\u003eIBM strongly recommends addressing the vulnerability now by upgrading \u003ca href=\"https://pypi.org/project/langflow/\" rel=\"nofollow\"\u003eLangflow OSS to version 1.11.2\u003c/a\u003e\u003c/p\u003e"
            }
          ],
          "value": "IBM strongly recommends addressing the vulnerability now by upgrading  Langflow OSS to version 1.11.2 https://pypi.org/project/langflow/"
        }
      ],
      "title": "Langflow is affected by multiple authentication bypass, path traversal, authorization, and server-side request forgery vulnerabilities"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "9a959283-ebb5-44b6-b705-dcc2bbced522",
    "assignerShortName": "ibm",
    "cveId": "CVE-2026-18904",
    "datePublished": "2026-08-28T20:52:08.372Z",
    "dateReserved": "2026-08-04T20:18:20.138Z",
    "dateUpdated": "2026-08-28T20:52:08.372Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-18904",
      "date": "2026-08-31",
      "epss": "0.00309",
      "percentile": "0.23139"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2026-18904\",\"sourceIdentifier\":\"psirt@us.ibm.com\",\"published\":\"2026-08-28T22:16:47.227\",\"lastModified\":\"2026-08-28T22:16:47.227\",\"vulnStatus\":\"Received\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"IBM Langflow OSS 1.0.0 through 1.11.1 could allow a remote attacker to obtain sensitive information and inject unauthorized messages due to a namespace collision between user identifiers.\"}],\"affected\":[{\"source\":\"psirt@us.ibm.com\",\"affectedData\":[{\"vendor\":\"IBM\",\"product\":\"Langflow OSS\",\"cpes\":[\"cpe:2.3:a:ibm:langflow_oss:1.0.0:*:*:*:*:*:*:*\",\"cpe:2.3:a:ibm:langflow_oss:1.11.1:*:*:*:*:*:*:*\"],\"versions\":[{\"version\":\"1.0.0\",\"lessThanOrEqual\":\"1.11.1\",\"versionType\":\"semver\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"psirt@us.ibm.com\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N\",\"baseScore\":8.2,\"baseSeverity\":\"HIGH\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"NONE\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"LOW\",\"availabilityImpact\":\"NONE\"},\"exploitabilityScore\":3.9,\"impactScore\":4.2}]},\"weaknesses\":[{\"source\":\"psirt@us.ibm.com\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-639\"}]}],\"references\":[{\"url\":\"https://www.ibm.com/support/pages/node/7284579\",\"source\":\"psirt@us.ibm.com\"}]}}"
  }
}