osTicket allows remote attackers to view sensitive uploaded files and possibly execute arbitrary code via an HTTP request that uploads a PHP file to the ticket attachments directory.

osTicket trusts a hidden form field in the submit form to limit the upload size of a document, which could allow remote attackers to upload a file of any size.

Multiple cross-site scripting (XSS) vulnerabilities in osTicket allow remote attackers to inject arbitrary web script or HTML via (1) the t parameter to view.php, (2) the osticket_title parameter to header.php, (3) the em parameter to admin_login.php, (4) the e parameter to user_login.php, (5) the err parameter to open_submit.php, or (6) the name and subject fields when adding a ticket.

Multiple SQL injection vulnerabilities in osTicket allow remote attackers to execute arbitrary SQL commands via the (1) id parameter to admin.php or (2) cat parameter to view.php.

PHP remote file inclusion vulnerability in main.php in osTicket allows remote attackers to execute arbitrary PHP code via the include_dir parameter.

Directory traversal vulnerability in attachments.php in osTicket allows remote attackers to read arbitrary files via .. sequences in the file parameter.

SQL injection vulnerability in class.ticket.php in osTicket 1.3.1 beta and earlier allows remote attackers to execute arbitrary SQL commands via the ticket variable.

PHP local file inclusion vulnerability in (1) view.php and (2) open.php in osTicket 1.3.1 beta and earlier allows remote attackers to include and possibly execute arbitrary local files via the inc parameter.

SQL injection vulnerability in scp/ajax.php in osTicket before 1.6.0 Stable allows remote authenticated users, with "Staff" permissions, to execute arbitrary SQL commands via the input parameter.

Cross-site scripting (XSS) vulnerability in scp/ajax.php in osTicket before 1.6.0 Stable allows remote authenticated users to inject arbitrary web script or HTML via the f parameter, possibly related to an error message generated by scp/admin.php.

Directory traversal vulnerability in osTicket 1.6 allows remote attackers to read arbitrary files via a .. (dot dot) in the file parameter to module.php, a different vector than CVE-2005-1439. NOTE: this issue has been disputed by a reliable third party

Multiple cross-site scripting (XSS) vulnerabilities in osTicket before 1.9.2 allow remote attackers to inject arbitrary web script or HTML via the (1) Phone Number field to open.php or (2) Phone number field, (3) passwd1 field, (4) passwd2 field, or (5) do parameter to account.php.

Cross-site scripting (XSS) vulnerability in upload/scp/tickets.php in osTicket before 1.9.5 allows remote attackers to inject arbitrary web script or HTML via the status parameter in a search action.

Cross-site scripting (XSS) vulnerability in client.inc.php in osTicket before 1.9.5.1 allows remote attackers to inject arbitrary web script or HTML via the lang parameter.

In osTicket before 1.10.1, SQL injection is possible by constructing an array via use of square brackets at the end of a parameter name, as demonstrated by the key parameter to file.php.

osTicket 1.10.1 allows arbitrary client-side JavaScript code execution on victims who click a crafted support/scp/tickets.php?status= link, aka XSS. Session ID and data theft may follow as well as the possibility of bypassing CSRF protections, injection of iframes to establish communication channels, etc. The vulnerability is present after login into the application. This affects a different tickets.php file than CVE-2015-1176.

osTicket 1.10.1 provides a functionality to upload 'html' files with associated formats. However, it does not properly validate the uploaded file's contents and thus accepts any type of file, such as with a tickets.php request that is modified with a .html extension changed to a .exe extension. An attacker can leverage this vulnerability to upload arbitrary files on the web application having malicious content.

Cross-site scripting (XSS) vulnerability in /ajax.php/form/help-topic in Enhancesoft osTicket before 1.10.2 allows remote attackers to inject arbitrary web script or HTML via the "message" parameter.

Cross-site scripting (XSS) vulnerability in /scp/directory.php in Enhancesoft osTicket before 1.10.2 allows remote attackers to inject arbitrary web script or HTML via the "order" parameter.

Integer format vulnerability in the ticket number generator in Enhancesoft osTicket before 1.10.2 allows remote attackers to cause a denial-of-service (preventing the creation of new tickets) via a large number of digits in the ticket number format setting.

Enhancesoft osTicket before 1.10.2 allows remote attackers to reset arbitrary passwords (when an associated e-mail address is known) by leveraging guest access and guessing a 6-digit number.

Cross-site scripting (XSS) vulnerability in /scp/index.php in Enhancesoft osTicket before 1.10.2 allows remote attackers to inject arbitrary web script or HTML via the "sort" parameter.

In osTicket before 1.12, XSS exists via /upload/file.php, /upload/scp/users.php?do=import-users, and /upload/scp/ajax.php/users/import if an agent manager user uploads a crafted .csv file to the User Importer, because file contents can appear in an error message. The XSS can lead to local file inclusion.

An issue was discovered in osTicket before 1.10.7 and 1.12.x before 1.12.1. The Ticket creation form allows users to upload files along with queries. It was found that the file-upload functionality has fewer (or no) mitigations implemented for file content checks; also, the output is not handled properly, causing persistent XSS that leads to cookie stealing or malicious actions. For example, a non-agent user can upload a .html file, and Content-Disposition will be set to inline instead of attachment.

An issue was discovered in osTicket before 1.10.7 and 1.12.x before 1.12.1. CSV (aka Formula) injection exists in the export spreadsheets functionality. These spreadsheets are generated dynamically from unvalidated or unfiltered user input in the Name and Internal Notes fields in the Users tab, and the Issue Summary field in the tickets tab. This allows other agents to download data in a .csv file format or .xls file format. This is used as input for spreadsheet applications such as Excel and OpenOffice Calc, resulting in a situation where cells in the spreadsheets can contain input from an untrusted source. As a result, the end user who is accessing the exported spreadsheet can be affected.

An issue was discovered in osTicket before 1.10.7 and 1.12.x before 1.12.1. Stored XSS exists in setup/install.php. It was observed that no input sanitization was provided in the firstname and lastname fields of the application. The insertion of malicious queries in those fields leads to the execution of those queries. This can further lead to cookie stealing or other malicious actions.

osTicket before 1.14.3 allows XSS because include/staff/banrule.inc.php has an unvalidated echo $info['notes'] call.

SSRF exists in osTicket before 1.14.3, where an attacker can add malicious file to server or perform port scanning.

osTicket before 1.14.3 allows XSS via a crafted filename to DraftAjaxAPI::_uploadInlineImage() in include/ajax.draft.php.

A stored cross-site scripting (XSS) vulnerability in the component audit/class.audit.php of osTicket-plugins - Storage-FS before commit a7842d494889fd5533d13deb3c6a7789768795ae allows attackers to execute arbitrary web scripts or HTML via a crafted SVG file.

A SQL injection vulnerability in the "Search" functionality of "tickets.php" page in osTicket <=1.17.5 allows authenticated attackers to execute arbitrary SQL commands via the "keywords" and "topic_id" URL parameters combination.

osTicket prior to v1.17.6 and v1.18.2 are vulnerable to Broken Access Control Vulnerability in /scp/ajax.php.