{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "misp",
          "vendor": "misp",
          "versions": [
            {
              "lessThan": "2.5.12",
              "status": "affected"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Lassi Kapanen of Second Nature Security"
        },
        {
          "lang": "en",
          "type": "remediation developer",
          "value": "Andras Iklody"
        },
        {
          "lang": "en",
          "type": "finder",
          "value": "Teemu Hakkarainen of Second Nature Security"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "In MISP, the \u201cREST client\u201d interface that allows viewing data returned by modules suffered from a cross-site scripting (XSS) vulnerability when presenting \u201cHTML view\u201d of arbitrary JSON data. Prior to commit \u003ccode\u003ed718c026d5d69a50e3bbd51847a05ad8f386ec6c\u003c/code\u003e, the application did not sufficiently validate or restrict the type of response before offering to render it as HTML, allowing malicious JSON responses to be rendered in HTML context. This could allow an attacker (via a compromised or malicious module) to supply JSON containing content that, when interpreted as HTML, executes as script in the user\u2019s browser."
            }
          ],
          "value": "In MISP, the \u201cREST client\u201d interface that allows viewing data returned by modules suffered from a cross-site scripting (XSS) vulnerability when presenting \u201cHTML view\u201d of arbitrary JSON data. Prior to commit d718c026d5d69a50e3bbd51847a05ad8f386ec6c, the application did not sufficiently validate or restrict the type of response before offering to render it as HTML, allowing malicious JSON responses to be rendered in HTML context. This could allow an attacker (via a compromised or malicious module) to supply JSON containing content that, when interpreted as HTML, executes as script in the user\u2019s browser."
        }
      ],
      "impacts": [
        {
          "descriptions": [
            {
              "lang": "en"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 9.4,
            "baseSeverity": "CRITICAL",
            "privilegesRequired": "LOW",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "HIGH",
            "subConfidentialityImpact": "HIGH",
            "subIntegrityImpact": "HIGH",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/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",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-79",
              "description": "CWE-79 Improper Neutralization of Input During Web Page Generation (XSS or \u0027Cross-site Scripting\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "orgId": "00000000-0000-4000-9000-000000000000"
      },
      "references": [
        {
          "url": "https://github.com/misp/misp/commit/d718c026d5d69a50e3bbd51847a05ad8f386ec6c"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "title": "XSS in MISP ReST client in HTML view",
      "x_generator": {
        "engine": "Vulnogram 0.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "00000000-0000-4000-9000-000000000000",
    "datePublished": "2025-11-26T15:55:00.000Z",
    "dateUpdated": "2025-12-02T08:48:41.869838Z",
    "requesterUserId": "00000000-0000-4000-9000-000000000000",
    "serial": 1,
    "state": "PUBLISHED",
    "vulnId": "GCVE-1-2025-0021",
    "vulnerabilitylookup_history": [
      [
        "alexandre.dulaunoy@circl.lu",
        "2025-11-26T15:55:16.468388Z"
      ],
      [
        "alexandre.dulaunoy@circl.lu",
        "2025-12-02T08:48:41.869838Z"
      ]
    ]
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}