What’s Vulnerable › Vulnerabilities
CVE-2023-1717: Bitrix24 Cross-Site Scripting (XSS) via Client-side Prototype Pollution
- Severity: critical (CVSS 9.6 v3.1)
- Exploited in the wild: not listed in CISA KEV
- EPSS: 1.1% probability of exploitation in the next 30 days
- Public exploit or detection template: yes
- Published: 2023-11-01 · updated 2026-06-17
- Weakness: CWE-79
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]`.
Affected products
- Bitrix24: 22.0.300
References
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