textpattern 4.8.7 is vulnerable to Cross Site Scripting (XSS) via /textpattern/index.php,Body. A remote and unauthenticated attacker can use XSS to trigger remote code execution by uploading a webshell. To do so they must first steal the CSRF token before submitting a file upload request.

Textpattern 4.8.7 is affected by a HTML injection vulnerability through “Content>Write>Body”.

Textpattern CMS v4.8.7 and older vulnerability exists through Sensitive Cookie in HTTPS Session Without 'Secure' Attribute via textpattern/lib/txplib_misc.php. The secure flag is not set for txp_login session cookie in the application. If the secure flag is not set, then the cookie will be transmitted in clear-text if the user visits any HTTP URLs within the cookie's scope. An attacker may be able to induce this event by feeding a user suitable links, either directly or via another web site.

Textpattern V4.8.4 contains an arbitrary file upload vulnerability where a plug-in can be loaded in the background without any security verification, which may lead to obtaining system permissions.

A persistent cross-site scripting vulnerability was discovered in the Excerpt parameter in Textpattern CMS 4.9.0 which allows remote attackers to execute arbitrary code via a crafted payload entered into the URL field. The vulnerability is triggered by users visiting the 'Articles' page.

A cross-site scripting vulnerability was discovered in the Comments parameter in Textpattern CMS 4.8.4 which allows remote attackers to execute arbitrary code via a crafted payload entered into the URL field. The vulnerability is triggered by users visiting https://site.com/articles/welcome-to-your-site#comments-head.

Textpattern 4.8.4 is affected by cross-site scripting (XSS) in the Body parameter.

Textpattern CMS 4.6.2 allows CSRF via the prefs subsystem.

Cross Site Scripting (XSS) vulnerability in Textpattern CMS 4.8.1 via Custom fields in the Menu Preferences feature.

Textpattern 4.7.3 contains an aribtrary file load via the file_insert function in include/txp_file.php.

An issue was discovered in Textpattern CMS 4.6.2 and earlier. It is possible to inject SQL code in the variable "qty" on the page index.php.

textpattern version version 4.6.2 contains a XML Injection vulnerability in Import XML feature that can result in Denial of service in context to the web server by exhausting server memory resources. This attack appear to be exploitable via Uploading a specially crafted XML file.

In Textpattern 4.5.7, the password-reset feature does not securely tether a hash to a user account.

In Textpattern 4.5.7, an unprivileged author can change an article's markup setting.