Security advisory

{
  "id": "ecf71c564cbc021733ef5a3bbe0edbfb81c7cd60c57e9b1649e1b7a2ee97a31f",
  "url": "https://osv.dev/vulnerability/CVE-2020-24582",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2020-24582",
    "summary": "Zulip Desktop before 5.4.3 allows XSS because string escaping is mishandled during composition of the HTML for the user interface.",
    "evidence": "osv:CVE-2020-24582",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2020-24582",
      "aliases": [
        "CVE-2020-24582"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/zulip/zulip-desktop",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "35ad6fbad04edb088e4ebbc005f8e68ee066725d"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:zulipchat:zulip_desktop:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "5.4.3"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v5.4.2",
            "v5.4.1-beta",
            "v5.4.0",
            "v5.3.0",
            "v5.2.0",
            "v5.1.0",
            "v5.0.0",
            "v4.0.2-beta",
            "v4.0.0",
            "v3.1.0-beta",
            "v3.0.0",
            "v2.5.0-beta",
            "v2.5.0",
            "v2.3.82",
            "v2.3.8",
            "v2.3.7-beta",
            "v2.3.6",
            "v2.3.5",
            "v2.3.4-beta",
            "v2.3.3",
            "v2.3.2",
            "v2.2.0-beta",
            "v2.0.0",
            "v1.9.0",
            "v1.8.2",
            "v1.8.1",
            "v1.7.0",
            "v1.6.0-beta",
            "v1.5.0",
            "v1.4.0",
            "v1.3.0-beta",
            "v1.2.0-beta",
            "v1.1.0-beta",
            "v1.0.0-beta",
            "v1.0.0",
            "v0.5.10",
            "v0.5.9",
            "v0.5.8",
            "v0.5.7",
            "v0.5.6",
            "v0.5.4",
            "v0.5.3",
            "v0.5.2",
            "v0.5.1",
            "v0.0.1-alpha"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-24582.json"
          }
        }
      ],
      "modified": "2026-10-24T10:31:04.236075472Z",
      "provider": "osv",
      "references": [
        "https://blog.zulip.com/2020/09/10/zulip-desktop-5-4-3-security-release/"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2020-24582",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 440451,
  "published_at": "2020-09-10T17:15:32.203+00:00"
}