{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "extracted_events": [
              {
                "introduced": "4.15.1"
              },
              {
                "fixed": "6.9.4"
              }
            ],
            "source": "AFFECTED_FIELD"
          },
          "events": [
            {
              "introduced": "990ae11f6291aa0a9d71007c0cee5e28b68c0c0a"
            },
            {
              "fixed": "8a22f2c106dd3c601e11d124b8d1894613d596fd"
            }
          ],
          "repo": "https://github.com/telegramdesktop/tdesktop",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "mitre",
    "cwe_ids": [
      "CWE-79"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/94xxx/CVE-2026-94488.json"
  },
  "details": "Telegram Desktop before 6.9.4 allows XSS in the HTML exporter. (The first fixed stable version is 7.0.1.) This occurs in button.text.toUtf8 in export_output_html.cpp. Exploitation cannot occur unless HTML export was used by a victim. However, the exploit payload can be exported if a message were forwarded into a group by a member (it is not necessary for the message author to be a member of a group).",
  "id": "CVE-2026-94488",
  "modified": "2026-09-24T03:30:52.294995472Z",
  "published": "2026-09-21T17:29:01.776Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/telegramdesktop/tdesktop/blob/v6.9.3/Telegram/SourceFiles/export/output/export_output_html.cpp"
    },
    {
      "type": "WEB",
      "url": "https://thehackernews.com/2026/09/telegram-desktop-flaw-lets-hidden.html"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/94xxx/CVE-2026-94488.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/telegramdesktop/tdesktop/releases/tag/v6.9.4"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-94488"
    },
    {
      "type": "FIX",
      "url": "https://github.com/telegramdesktop/tdesktop/commit/52c779bffa8dde3c5c09826add2607328fae0924"
    },
    {
      "type": "FIX",
      "url": "https://github.com/telegramdesktop/tdesktop/commit/8457d13aa795fadf99c955d2a04f00ebc3c59df9"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/telegramdesktop/tdesktop"
    },
    {
      "type": "EVIDENCE",
      "url": "https://expatch.com/writeups/telegram-html-export-xss.html"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    }
  ]
}