What is CVE-2020-13758?

CVE-2020-13758 is a medium-severity vulnerability in Bitrix Bitrix24, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2020-06-01.

How severe is CVE-2020-13758?

Medium severity. CVSS v3 base score is 6.1 out of 10.

Is CVE-2020-13758 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Bitrix Bitrix24

CVE-2020-13758

modules/security/classes/general.post_filter.php/post_filter.php in the Web Application Firewall in Bitrix24 through 20.0.950 allows XSS by placing %00 before the payload.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.009 (54.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Bitrix Bitrix24
N/a — versions n/a

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

References

cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2020-13758?: CVE-2020-13758 is a medium-severity vulnerability in Bitrix Bitrix24, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2020-06-01.
How severe is CVE-2020-13758?: Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2020-13758 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.