{"id":"CVE-2023-1718","aliases":["EUVD-2023-23941","GHSA-qx86-33ww-3474"],"status":"published","title":"Bitrix24 Denial-of-Service (DoS) via Improper File Stream Access","description":"Improper file stream access in /desktop_app/file.ajax.php?action=uploadfile in Bitrix24 22.0.300 allows unauthenticated remote attackers to cause denial-of-service via a crafted \"tmp_url\".","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.28693,"percentile":0.98156,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-835"],"published":"2023-11-01T09:04:03Z","modified":"2026-06-17T05:28:36Z","exploits":[{"source":"pocgithub","id":"jhonnybonny/Bitrix24DoS","title":"jhonnybonny/Bitrix24DoS","date":"2023-11-08","url":"https://github.com/jhonnybonny/Bitrix24DoS"}],"products":[{"vendor":"bitrix24","product":"bitrix24"}],"references":[{"url":"https://starlabs.sg/advisories/23/23-1718/","tags":["third-party-advisory","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-1718"},{"url":"https://github.com/advisories/GHSA-qx86-33ww-3474"}],"sources":{"cve":[{"id":"CVE-2023-1718","title":"Bitrix24 Denial-of-Service (DoS) via Improper File Stream Access","description":"\nImproper file stream access in /desktop_app/file.ajax.php?action=uploadfile in Bitrix24 22.0.300 allows unauthenticated remote attackers to cause denial-of-service via a crafted \"tmp_url\".\n\n\n\n\n\n","status":"published","published":"2023-11-01T09:04:03.276Z","modified":"2024-09-05T19:44:21.617Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-835"],"updated_at":"2026-11-02T14:35:32.019713Z"}],"euvd":[{"id":"EUVD-2023-23941","description":"\nImproper file stream access in /desktop_app/file.ajax.php?action=uploadfile in Bitrix24 22.0.300 allows unauthenticated remote attackers to cause denial-of-service via a crafted \"tmp_url\".\n\n\n\n\n\n","status":"published","published":"2023-11-01T09:04:03Z","modified":"2024-09-05T19:44:21Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-03T00:56:02.678796Z"}],"ghsa":[{"id":"GHSA-qx86-33ww-3474","title":"\nImproper file stream access in /desktop_app/file.ajax.php?action=uploadfile in Bitrix24 22.0.300...","description":"\nImproper file stream access in /desktop_app/file.ajax.php?action=uploadfile in Bitrix24 22.0.300 allows unauthenticated remote attackers to cause denial-of-service via a crafted \"tmp_url\".\n\n\n\n\n\n","status":"published","published":"2023-11-01T12:30:19Z","modified":"2023-11-09T21:30:34Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-835"],"updated_at":"2026-11-02T14:54:56.096891Z"}],"nvd":[{"id":"CVE-2023-1718","description":"\nImproper file stream access in /desktop_app/file.ajax.php?action=uploadfile in Bitrix24 22.0.300 allows unauthenticated remote attackers to cause denial-of-service via a crafted \"tmp_url\".\n\n\n\n\n\n","status":"published","published":"2023-11-01T10:15:09.307Z","modified":"2026-06-17T05:28:36.517Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-835"],"updated_at":"2026-11-02T14:08:41.047232Z"}]}}