{
  "id": "CVE-2023-30538",
  "sourceIdentifier": "security-advisories@github.com",
  "published": "2023-04-18T22:15:08.130",
  "lastModified": "2023-04-28T03:50:49.933",
  "vulnStatus": "Analyzed",
  "descriptions": [
    {
      "lang": "en",
      "value": "Discourse is an open source platform for community discussion. Due to the improper sanitization of SVG files, an attacker can execute arbitrary JavaScript on the users\u2019 browsers by uploading a crafted SVG file. This issue is patched in the latest stable and tests-passed versions of Discourse. Users are advised to upgrade. For users unable to upgrade there are two possible workarounds: enable CDN handing of uploads (and ensure the CDN sanitizes SVG files) or disable SVG file uploads by ensuring that the `authorized extensions` site setting does not include `svg` (or reset that setting to the default, by default Discourse doesn't enable SVG uploads by users). "
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "nvd@nist.gov",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "REQUIRED",
          "scope": "CHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "availabilityImpact": "NONE",
          "baseScore": 5.4,
          "baseSeverity": "MEDIUM"
        },
        "exploitabilityScore": 2.3,
        "impactScore": 2.7
      },
      {
        "source": "security-advisories@github.com",
        "type": "Secondary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N",
          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "REQUIRED",
          "scope": "UNCHANGED",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "availabilityImpact": "NONE",
          "baseScore": 5.4,
          "baseSeverity": "MEDIUM"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 2.5
      }
    ]
  },
  "weaknesses": [
    {
      "source": "security-advisories@github.com",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:discourse:discourse:*:*:*:*:stable:*:*:*",
              "versionEndIncluding": "3.0.2",
              "matchCriteriaId": "00B6C4A7-D922-42E9-9E83-4FF77564982E"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:discourse:discourse:*:*:*:*:beta:*:*:*",
              "versionEndExcluding": "3.1.0",
              "matchCriteriaId": "D3C08972-822D-4657-9B6F-02BC692B7C6E"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:discourse:discourse:3.1.0:beta1:*:*:beta:*:*:*",
              "matchCriteriaId": "B9BBED17-A6BA-4F17-8814-8D8521F28375"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:discourse:discourse:3.1.0:beta2:*:*:beta:*:*:*",
              "matchCriteriaId": "888B8ECF-EBE0-4821-82F6-B0026E95E407"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:a:discourse:discourse:3.1.0:beta3:*:*:beta:*:*:*",
              "matchCriteriaId": "FD0302B1-C0BA-49EE-8E1B-E8A43879BFC2"
            }
          ]
        }
      ]
    }
  ],
  "references": [
    {
      "url": "https://github.com/discourse/discourse/security/advisories/GHSA-w5mv-4pjf-xj43",
      "source": "security-advisories@github.com",
      "tags": [
        "Mitigation",
        "Third Party Advisory"
      ]
    }
  ]
}