{"id":"CVE-2023-1717","aliases":["EUVD-2023-23940","GHSA-5vm6-5fwc-4g9h"],"status":"published","title":"Bitrix24 Cross-Site Scripting (XSS) via Client-side Prototype Pollution","description":"Prototype pollution in bitrix/templates/bitrix24/components/bitrix/menu/left_vertical/script.js in Bitrix24 22.0.300 allows remote attackers to execute arbitrary JavaScript code in the victim’s browser, and possibly execute arbitrary PHP code on the server if the victim has administrator privilege, via polluting `__proto__[tag]` and `__proto__[text]`.","severity":{"version":"3.1","score":9.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.01459,"percentile":0.73922,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-1321","CWE-79"],"published":"2023-11-01T09:03:46Z","modified":"2026-06-17T05:28:36Z","products":[{"vendor":"bitrix24","product":"bitrix24"}],"references":[{"url":"https://starlabs.sg/advisories/23/23-1717/","tags":["third-party-advisory","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2023-1717"},{"url":"https://github.com/advisories/GHSA-5vm6-5fwc-4g9h"}],"sources":{"cve":[{"id":"CVE-2023-1717","title":"Bitrix24 Cross-Site Scripting (XSS) via Client-side Prototype Pollution","description":"\nPrototype pollution in bitrix/templates/bitrix24/components/bitrix/menu/left_vertical/script.js in Bitrix24 22.0.300 allows remote attackers to execute arbitrary JavaScript code in the victim’s browser, and possibly execute arbitrary PHP code on the server if the victim has administrator privilege, via polluting `__proto__[tag]` and `__proto__[text]`.\n\n\n\n\n\n","status":"published","published":"2023-11-01T09:03:46.376Z","modified":"2024-09-05T19:45:36.92Z","cvss":[{"version":"3.1","score":9.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"critical","assessor":"cna"}],"cwes":["CWE-79","CWE-1321"],"updated_at":"2026-11-02T14:35:32.019713Z"}],"euvd":[{"id":"EUVD-2023-23940","description":"\nPrototype pollution in bitrix/templates/bitrix24/components/bitrix/menu/left_vertical/script.js in Bitrix24 22.0.300 allows remote attackers to execute arbitrary JavaScript code in the victim’s browser, and possibly execute arbitrary PHP code on the server if the victim has administrator privilege, via polluting `__proto__[tag]` and `__proto__[text]`.\n\n\n\n\n\n","status":"published","published":"2023-11-01T09:03:46Z","modified":"2024-09-05T19:45:36Z","cvss":[{"version":"3.1","score":9.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"critical"}],"updated_at":"2026-11-03T00:56:02.678796Z"}],"ghsa":[{"id":"GHSA-5vm6-5fwc-4g9h","title":"\nPrototype pollution in bitrix/templates/bitrix24/components/bitrix/menu/left_vertical/script.js...","description":"\nPrototype pollution in bitrix/templates/bitrix24/components/bitrix/menu/left_vertical/script.js in Bitrix24 22.0.300 allows remote attackers to execute arbitrary JavaScript code in the victim’s browser, and possibly execute arbitrary PHP code on the server if the victim has administrator privilege, via polluting `__proto__[tag]` and `__proto__[text]`.\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":9.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-1321"],"updated_at":"2026-11-02T14:54:56.096891Z"}],"nvd":[{"id":"CVE-2023-1717","description":"\nPrototype pollution in bitrix/templates/bitrix24/components/bitrix/menu/left_vertical/script.js in Bitrix24 22.0.300 allows remote attackers to execute arbitrary JavaScript code in the victim’s browser, and possibly execute arbitrary PHP code on the server if the victim has administrator privilege, via polluting `__proto__[tag]` and `__proto__[text]`.\n\n\n\n\n\n","status":"published","published":"2023-11-01T10:15:09.243Z","modified":"2026-06-17T05:28:36.393Z","cvss":[{"version":"3.1","score":9.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"critical","assessor":"secondary"},{"version":"3.1","score":9.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","level":"critical","assessor":"primary"}],"cwes":["CWE-79","CWE-1321"],"updated_at":"2026-11-02T14:08:41.047232Z"}]}}