Cross site scripting vulnerability for private chat in bigbluebutton

{
  "id": "6ae3602bb8f28f7187a8c171a75982aa7f076a71e359325497a52975ea5c448b",
  "url": "https://osv.dev/vulnerability/CVE-2022-31065",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Cross site scripting vulnerability for private chat in bigbluebutton",
    "summary": "BigBlueButton is an open source web conferencing system. In affected versions an attacker can embed malicious JS in their username and have it executed on the victim's client. When a user receives a private chat from the attacker (whose username contains malicious JavaScript), the script gets executed. Additionally when the victim receives a notification that the attacker has left the session. This issue has been patched in version 2.4.8 and 2.5.0. There are no known workarounds for this issue.",
    "evidence": "osv:CVE-2022-31065",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2022-31065",
      "aliases": [
        "CVE-2022-31065",
        "GHSA-8m2p-7qv3-qff7"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:L"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/bigbluebutton/bigbluebutton",
              "type": "GIT",
              "events": [
                {
                  "introduced": "72d5e54e3eb3cd442d23dc097158fe81f1efda82"
                },
                {
                  "fixed": "e2a2fdc5500192c603ae888a67dca0affdf00d7c"
                },
                {
                  "introduced": "c67ad7390c02018ec9f71ee67e528e9f3fc6ea6f"
                },
                {
                  "last_affected": "60d46e4ae5da027cac2b5e2302d9b931cd432402"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:bigbluebutton:bigbluebutton:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2.4"
                      },
                      {
                        "fixed": "2.4.8"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:bigbluebutton:bigbluebutton:2.3.0:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2.3.0"
                      },
                      {
                        "last_affected": "2.3.0"
                      }
                    ],
                    "source": "CPE_STRING"
                  },
                  {
                    "cpe": "cpe:2.3:a:bigbluebutton:bigbluebutton:2.4.9:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2.4.9"
                      },
                      {
                        "last_affected": "2.4.9"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "2.3.0",
            "2.4.9",
            "v2.4.7",
            "v2.4.6",
            "v2.4.5",
            "v2.4.3",
            "v2.4.4",
            "v2.4.2",
            "v2.4.1",
            "v2.4.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-31065.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:33.406804128Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/31xxx/CVE-2022-31065.json",
        "https://github.com/bigbluebutton/bigbluebutton/security/advisories/GHSA-8m2p-7qv3-qff7",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-31065",
        "https://github.com/bigbluebutton/bigbluebutton/pull/15087",
        "https://github.com/bigbluebutton/bigbluebutton/pull/15090"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-79"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/31xxx/CVE-2022-31065.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2022-31065",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 500376,
  "published_at": "2022-06-27T19:45:21+00:00"
}