Security advisory

{
  "id": "d098877ebd4143d070eb7c8c1f3357c00a471e8027f0e4269cff10c4911bce63",
  "url": "https://osv.dev/vulnerability/CVE-2020-28954",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-28954",
    "summary": "web/controllers/ApiController.groovy in BigBlueButton before 2.2.29 lacks certain parameter sanitization, as demonstrated by accepting control characters in a user name.",
    "evidence": "osv:CVE-2020-28954",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2020-28954",
      "aliases": [
        "CVE-2020-28954"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/bigbluebutton/bigbluebutton",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "18b75285714bc2eca7a58a0611ff3af267cbd4c7"
                },
                {
                  "fixed": "5c911ddeec4493f40f42e2f137800ed4692004a4"
                },
                {
                  "fixed": "e59bcd0c33a6a3203c011faa8823ba2cac1e4f37"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:bigbluebutton:bigbluebutton:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "2.2.29"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "5c911ddeec4493f40f42e2f137800ed4692004a4"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "e59bcd0c33a6a3203c011faa8823ba2cac1e4f37"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v2.2.28",
            "v2.2.27",
            "v2.2.26",
            "v2.2.23",
            "v2.2.25",
            "v2.2.24",
            "v2.2.22",
            "v2.2.21",
            "v2.2.20",
            "v2.2.19",
            "v2.2.18",
            "v2.2.17",
            "v2.2.16",
            "v2.2.15",
            "v2.2.14",
            "v2.2.12",
            "v2.2.11-good",
            "v2.2.10",
            "v2.2.9",
            "v2.2.8",
            "v2.2.7",
            "v2.2.6",
            "v2.2.5",
            "v2.2.4",
            "v2.2.2",
            "v2.2.3",
            "v2.2.1",
            "v2.2.0",
            "2.2-rc-6",
            "2.2-rc-5",
            "2.2-rc-4",
            "2.2-beta-17",
            "2.2-beta-16",
            "2.2-beta-15",
            "2.2-beta-14",
            "2.2-beta-12",
            "2.2-beta-11",
            "2.2-beta-10",
            "2.2-beta-9",
            "2.2-beta-8",
            "2.2-beta-7",
            "2.2-beta-6",
            "2.2-beta-5",
            "2.2-beta-4",
            "2.2-beta-3",
            "2.2-beta-2",
            "dcs-2-a",
            "v0.9.0-beta",
            "v0.8",
            "v0.8rc2",
            "v0.8b4.0",
            "v0.8b4"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-28954.json"
          }
        }
      ],
      "modified": "2026-10-20T10:53:11.818240870Z",
      "provider": "osv",
      "references": [
        "https://github.com/bigbluebutton/bigbluebutton/compare/v2.2.28...v2.2.29",
        "https://github.com/bigbluebutton/bigbluebutton/issues/10818",
        "https://github.com/bigbluebutton/bigbluebutton/commit/5c911ddeec4493f40f42e2f137800ed4692004a4",
        "https://github.com/bigbluebutton/bigbluebutton/commit/e59bcd0c33a6a3203c011faa8823ba2cac1e4f37"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-28954",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 384222,
  "published_at": "2020-11-19T22:15:13.757+00:00"
}