Cross-site scripting vulnerability in Zulip Server

{
  "id": "cbc1e0e4727ed0147b5bad2ab18ee2e68ba8b21d6b55e4e5f980d86d29412c27",
  "url": "https://osv.dev/vulnerability/CVE-2022-23656",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Cross-site scripting vulnerability in Zulip Server",
    "summary": "Zulip is an open source team chat app. The `main` development branch of Zulip Server from June 2021 and later is vulnerable to a cross-site scripting vulnerability on the recent topics page. An attacker could maliciously craft a full name for their account and send messages to a topic with several participants; a victim who then opens an overflow tooltip including this full name on the recent topics page could trigger execution of JavaScript code controlled by the attacker. Users running a Zulip server from the main branch should upgrade from main (2022-03-01 or later) again to deploy this fix.",
    "evidence": "osv:CVE-2022-23656",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2022-23656",
      "aliases": [
        "CVE-2022-23656",
        "GHSA-fc77-h3jc-6mfv"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/zulip/zulip",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "e090027adcbf62737d5b1f83a9618a9500a49321"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "fixed": "e090027adcbf62737d5b1f83a9618a9500a49321"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "shared-0.0.6",
            "4.0",
            "5.0-dev",
            "shared-0.0.5",
            "shared-0.0.4",
            "shared-0.0.3",
            "4.0-dev",
            "3.0",
            "3.0-rc2",
            "3.0-rc1",
            "3.0-dev",
            "2.2-dev",
            "2.1.0",
            "2.1.0-rc1",
            "shared-0.0.2",
            "shared-0.0.1",
            "2.0.0",
            "2.1-dev",
            "2.0.0-rc1",
            "1.9.0",
            "1.9.0-rc3",
            "1.9.0-rc2",
            "1.8.0",
            "1.8.0-rc1",
            "1.7.0",
            "1.6.0",
            "1.5.0",
            "1.4.0",
            "1.3.13",
            "1.3.11",
            "1.3.10",
            "1.3.9",
            "1.3.8",
            "1.3.7",
            "1.3.6",
            "1.3.5",
            "1.3.4",
            "1.3.3",
            "1.3.2",
            "1.3.1",
            "1.3.0",
            "enterprise-1.2.0",
            "enterprise-1.1.5"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2022-23656.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:37.516395652Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/23xxx/CVE-2022-23656.json",
        "https://github.com/zulip/zulip/security/advisories/GHSA-fc77-h3jc-6mfv",
        "https://nvd.nist.gov/vuln/detail/CVE-2022-23656",
        "https://github.com/zulip/zulip/commit/e090027adcbf62737d5b1f83a9618a9500a49321"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-79"
        ],
        "cna_assigner": "GitHub_M",
        "unresolved_ranges": [
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "introduced": "2021-06-03"
                  },
                  {
                    "fixed": "2022-03-01"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StringRangeExpression"
              }
            ]
          }
        ],
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2022/23xxx/CVE-2022-23656.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2022-23656",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 504690,
  "published_at": "2022-03-02T20:25:10+00:00"
}