CVE-2023-1717: BITRIX24

Critical severity, CVSS 9.6. EPSS: 1.1% chance of exploitation in the next 30 days.

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]`.

Affected products

• BITRIX24 BITRIX24: version 22.0.300 only

Published 2023-11-01. Last modified 2026-06-17.