Mobile crash via object that can't be cast to String in Attachment Field

{
  "id": "bcdb10883c5a2cdce98101f4c6cd38eeda699166452f44b74db52acfc9122d18",
  "url": "https://osv.dev/vulnerability/CVE-2025-20630",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Mobile crash via object that can't be cast to String in Attachment Field",
    "summary": "Mattermost Mobile versions <=2.22.0 fail to properly handle posts with attachments containing fields that cannot be cast to a String, which allows an attacker to cause the mobile to crash via creating and sending such a post to a channel.",
    "evidence": "osv:CVE-2025-20630",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2025-20630",
      "aliases": [
        "CVE-2025-20630"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/mattermost/mattermost-mobile",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "25563d1598f31c34baaa718cfd600cd7e2333438"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:mattermost:mattermost_mobile:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "2.23.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-20630.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:45.973366603Z",
      "provider": "osv",
      "references": [
        "https://mattermost.com/security-updates",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/20xxx/CVE-2025-20630.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-20630"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-1287"
        ],
        "cna_assigner": "Mattermost",
        "unresolved_ranges": [
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "last_affected": "<=2.22.0"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "StandardRange"
              }
            ]
          }
        ],
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/20xxx/CVE-2025-20630.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-20630",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 514285,
  "published_at": "2025-01-16T18:18:58.742+00:00"
}