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.

CVSS v3.1

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

CVSS v2.0

4.3 MEDIUMAV:N/AC:M/Au:N/C:N/I:P/A:N

EPSS

0.86% chance of exploitation in the next 30 days, 56th percentile

Published

2020-06-01

Updated

2024-08-04

Proof-of-concept exploits (1)

• https://blog.deteact.com/bitrix-waf-bypass/

References

• CVE Record
• NVD entry

Related

• CVE-2020-13757
• CVE-2020-13768
• CVE-2020-13756
• CVE-2020-13777
• CVE-2020-13700
• CVE-2020-13788