CVE-2020-13483

Name: CVE-2020-13483
Creator: NVD / NIST
Published: 2020-06-24T15:15:11.727+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 4.51%

Last modified Jun 17, 2026

CVE-2020-13483 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. 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.. EPSS estimates a 4.51% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

6.1/10

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

EPSS Probability

4.51%

90.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Bitrix24	Bitrix24	<= 20.0.0

References

https://gist.github.com/mariuszpoplwski/ca6258cf00c723184ebd2228ba81f558Exploit, Third Party Advisory
https://gist.github.com/mariuszpoplwski/ca6258cf00c723184ebd2228ba81f558Exploit, Third Party Advisory

Timeline

Published: Jun 24, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-13483?

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.

How severe is CVE-2020-13483?

CVE-2020-13483 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 4.51% probability of exploitation in the next 30 days.

How do I fix CVE-2020-13483?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-13483?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST