Security advisory

{
  "id": "8109b546d6962ab90dfe3f992a1cc34d44494568ba9df12248dbfca05e34b308",
  "url": "https://osv.dev/vulnerability/CVE-2020-8891",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-8891",
    "summary": "An issue was discovered in MISP before 2.4.121. It did not canonicalize usernames when trying to block a brute-force series of invalid requests.",
    "evidence": "osv:CVE-2020-8891",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2020-8891",
      "aliases": [
        "CVE-2020-8891"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/misp/misp",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "88894fc2e5773e10ae717ab87fea700693fb7dae"
                },
                {
                  "fixed": "934c82819237b4edf1da64587b72a87bec5dd520"
                },
                {
                  "fixed": "c1a0b3b2809b21b4df8c1efbc803aff700e262c3"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:misp-project:misp:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "2.4.121"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "934c82819237b4edf1da64587b72a87bec5dd520"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  },
                  {
                    "range": [
                      {
                        "fixed": "c1a0b3b2809b21b4df8c1efbc803aff700e262c3"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v2.4.120",
            "v2.4.118",
            "v2.4.111",
            "rm",
            "v2.4.110",
            "v2.4.109",
            "codename/tellurium",
            "v2.4.107",
            "v2.4.106",
            "v2.4.102",
            "v2.4.101",
            "v2.4.100",
            "v2.4.98",
            "v2.4.96",
            "v2.4.95",
            "v2.4.94",
            "v2.4.93",
            "v2.4.91",
            "v2.4.89",
            "v2.4.88",
            "v2.4.87",
            "v2.4.86",
            "v2.4.85",
            "v2.4.83",
            "v2.4.82",
            "v2.4.80",
            "v2.4.78",
            "v2.4.65",
            "v2.4.64",
            "v2.4.63",
            "v2.4.62",
            "v2.4.61",
            "v2.4.60",
            "v2.4.59",
            "v2.4.58",
            "v2.4.57",
            "v2.4.56",
            "v2.4.54",
            "v2.4.53",
            "v2.4.52",
            "v2.4.51",
            "v2.4.50",
            "v2.4.48",
            "v2.4.47",
            "v2.4.46",
            "v2.4.45",
            "v2.4.43",
            "v2.4.39",
            "v2.4.38",
            "v2.4.37",
            "v2.4.36",
            "v2.4.35",
            "v2.4.34",
            "v2.4.27",
            "v2.4.26",
            "v2.4.25",
            "v2.4.24",
            "v2.4.23",
            "v2.4.22",
            "v2.4.21",
            "v2.4.20",
            "v2.4.18",
            "v2.4.17",
            "v2.4.16",
            "v2.4.15",
            "v2.4.14",
            "v2.4.13",
            "v2.4.11",
            "v2.4.10",
            "v2.4.9",
            "v2.4.7",
            "v2.4.5",
            "v2.4.4",
            "v2.4.3",
            "v2.4.2",
            "v2.4.1",
            "v2.4.0",
            "v2.3.0",
            "v0.2"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-8891.json"
          }
        }
      ],
      "modified": "2026-10-20T10:54:25.809449129Z",
      "provider": "osv",
      "references": [
        "https://github.com/MISP/MISP/commit/934c82819237b4edf1da64587b72a87bec5dd520",
        "https://github.com/MISP/MISP/commit/c1a0b3b2809b21b4df8c1efbc803aff700e262c3",
        "https://github.com/MISP/MISP/compare/v2.4.120...v2.4.121"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-8891",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 385354,
  "published_at": "2020-02-12T00:15:09.607+00:00"
}