Ajax30 BraveCMS-2.0 nl2br msg cross site scripting

Summaryinfo

A vulnerability identified as problematic has been detected in Ajax30 BraveCMS-2.0. Affected is the function nl2br. The manipulation of the argument msg leads to cross site scripting. This vulnerability is listed as CVE-2026-41576. The attack may be initiated remotely. There is no available exploit. It is suggested to install a patch to address this issue.

Detailsinfo

A vulnerability was found in Ajax30 BraveCMS-2.0 (affected version not known) and classified as problematic. This issue affects the function nl2br. The manipulation of the argument msg with an unknown input leads to a cross site scripting vulnerability. Using CWE to declare the problem leads to CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. Impacted is integrity. The summary by CVE is:

Brave CMS is an open-source CMS. Prior to commit 6c56603, the contact form is publicly accessible (no authentication required). User-supplied message text is passed through PHP's nl2br() function, which converts newlines to tags but does not escape HTML. The resulting string is then passed to a Blade email template using the unescaped {!! $msg !!} directive. The resulting content is then rendered in a Blade email template using the unescaped {!! $msg !!} directive. Because HTML is not sanitized, arbitrary markup can be injected into the email body. While modern HTML-capable email clients (Gmail or Outlook Web) typically block JavaScript execution, they still render HTML content. This allows attackers to craft convincing phishing interfaces inside the email sent to the administrator. This issue has been patched via commit 6c56603.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-41576 since 04/21/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

Applying the patch 6c5660373cf5f0ca9181603280427aca46ef11ea is able to eliminate this problem. The bugfix is ready for download at github.com.

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• Ajax30

Name

• BraveCMS-2.0

License

• open-source

Website

• Product: https://github.com/Ajax30/BraveCMS-2.0/

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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