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.

Directory traversal vulnerability in the bitrix.mpbuilder module before 1.0.12 for Bitrix allows remote administrators to include and execute arbitrary local files via a .. (dot dot) in the element name of the "work" array parameter to admin/bitrix.mpbuilder_step2.php.

Directory traversal vulnerability in the bitrix.xscan module before 1.0.4 for Bitrix allows remote authenticated users to rename arbitrary files, and consequently obtain sensitive information or cause a denial of service, via a .. (dot dot) in the file parameter to admin/bitrix.xscan_worker.php.

The Bitrix e-Store module before 14.0.1 for Bitrix Site Manager uses sequential values for the BITRIX_SM_SALE_UID cookie, which makes it easier for remote attackers to guess the cookie value and bypass authentication via a brute force attack.

The Update functionality in Bitrix Site Manager 4.1.x does not verify the authenticity of downloaded updates, which allows remote attackers to obtain sensitive information and ultimately execute arbitrary PHP code via DNS cache poisoning that redirects the user to a malicious site.

Cross-site scripting (XSS) vulnerability in the administrative interface Bitrix Site Manager 4.1.x allows remote attackers to inject arbitrary web script or HTML via unspecified inputs.

Bitrix Site Manager 4.1.x allows remote attackers to redirect users to other websites via a modified back_url during a HTTP POST request. NOTE: this issue has been referred to as "cross-site scripting," but that is inconsistent with the common use of the term.

Bitrix Site Manager 4.1.x stores updater.log under the web document root with insufficient access control, which allows remote attackers to obtain sensitive information.

Bitrix Site Manager 4.0.x allows remote attackers to obtain sensitive information via direct request to (1) subscr_form.php or (2) dbquery_error.php, which reveals the path in an error message.

PHP remote file inclusion vulnerability in start.php in Bitrix Site Manager 4.0.x allows remote attackers to execute arbitrary PHP code via the _SERVER[DOCUMENT_ROOT] parameter.