Security advisory

{
  "id": "8e22128d5c43d61a047f61b5939939eb72816b00474ff3a34f898d6f3576b156",
  "url": "https://osv.dev/vulnerability/CVE-2020-22785",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-22785",
    "summary": "Etherpad < 1.8.3 is affected by a missing lock check which could cause a denial of service. Aggressively targeting random pad import endpoints with empty data would flatten all pads due to lack of rate limiting and missing ownership check.",
    "evidence": "osv:CVE-2020-22785",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2020-22785",
      "aliases": [
        "CVE-2020-22785"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/ether/etherpad",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "62101147a0c3495dc80daa87ab53a3366321a205"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:etherpad:etherpad:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "1.8.3"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "1.7.5",
            "1.8.0",
            "1.8.0-beta.1",
            "1.7.0",
            "1.6.6",
            "1.6.5",
            "1.6.3",
            "1.6.2",
            "1.6.1",
            "1.6.0",
            "1.5.7",
            "1.5.6",
            "1.5.5",
            "1.5.4",
            "1.5.3",
            "1.5.2",
            "1.5.1",
            "1.4.1",
            "1.4.0",
            "1.3.0",
            "1.2.12",
            "1.2.9",
            "1.2.7",
            "1.2.6",
            "1.2.5",
            "1.2.4",
            "1.2.3",
            "1.2.2",
            "1.2.1",
            "1.2.0",
            "1.1.5",
            "1.1.4",
            "1.1.3",
            "1.1.2",
            "1.1.1",
            "1.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-22785.json"
          }
        }
      ],
      "modified": "2026-10-20T10:52:14.679993138Z",
      "provider": "osv",
      "references": [
        "https://github.com/ether/etherpad-lite/pull/3833"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-22785",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 383495,
  "published_at": "2021-04-28T21:15:08.713+00:00"
}