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Vulnerability record · CVE-2020-13483 · published 24 June 2020

CVE-2020-13483: Bitrix24 cross-site scripting vulnerability

Bitrix24 · Bitrix24

The Web Application Firewall in Bitrix24 through 20.0.0 allows XSS via the items[ITEMS][ID] parameter to the components/bitrix/mobileapp.list/ajax.php/ URI.

6.1 CVSS 3.1 Medium EPSS 4.5% · top 8.8% CWE-79 · Cross-site scripting
6.1CVSS 3.1 base score, v2 4.3
4.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References, 2 tagged exploit
17 Jun 2026Last modified by NVD

Description

The Web Application Firewall in Bitrix24 through 20.0.0 allows XSS via the items[ITEMS][ID] parameter to the components/bitrix/mobileapp.list/ajax.php/ URI.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://gist.github.com/mariuszpoplwski/ca6258cf00c723184ebd2228ba81f558 ExploitThird Party Advisory
https://gist.github.com/mariuszpoplwski/ca6258cf00c723184ebd2228ba81f558 ExploitThird Party Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2020-13483), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.