PT-2026-31419

Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.1 and 6.5.4, the used endpoint for ticket creation was missing authorization if the related parameter for adding links is used. This vulnerability is fixed in 7.0.1 and 6.5.4...

PT-2026-31420

Name of the Vulnerable Software and Affected Versions Zammad versions prior to 7.0.1 and prior to 6.5.4 Description Zammad, a web-based open-source helpdesk system, allowed unauthenticated remote attackers to access sensitive internal entity data through the getting started endpoint, even after...

PT-2026-31421

Name of the Vulnerable Software and Affected Versions Zammad versions prior to 7.0.1 Description Zammad is a web-based open-source helpdesk/customer support system. A server-side template injection vulnerability exists via the AI Agent, potentially leading to Remote Code Execution RCE. The impact...

PT-2026-31415

Name of the Vulnerable Software and Affected Versions Zammad versions prior to 7.0.1 and prior to 6.5.4 Description Zammad, a web-based open-source helpdesk system, had an issue in its HTML sanitizer for ticket articles. The sanitizer lacked proper sanitization of URI schemes, allowing malicious...

CVE-2026-34782: Missing Authorization

Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.1 and 6.5.4, the REST endpoint POST /api/v1/aiassistance/texttools/:id was not checking if a user is privileged to use the text tool, resulting in being able to use it in all situations. This vulnerability is fixed i...

Zammad 跨站请求伪造漏洞

Zammad is a ticketing management software developed by the German company Zammad. Versions of Zammad prior to 7.0.1 and 6.5.4 contained a cross-site request forgeing vulnerability. This vulnerability stemmed from the lack of validation of the CSRF status parameter in the OAuth callback endpoint,...

PT-2026-31418

Name of the Vulnerable Software and Affected Versions Zammad versions prior to 7.0.1 and prior to 6.5.4 Description The OAuth callback endpoints for Microsoft, Google, and Facebook external credentials do not validate a CSRF state parameter. This could allow an attacker to potentially compromise...

CVE-2026-34720: Origin Validation Error

Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.1 and 6.5.4, the SSO mechanism in Zammad was not verifying the header originates from a trusted SSO proxy/gateway before applying further actions on it. This vulnerability is fixed in 7.0.1 and 6.5.4...

CVE-2023-50454

An issue was discovered in Zammad before 6.2.0. In several subsystems, SSL/TLS was used to establish connections to external services without proper validation of hostname and certificate authority. This is exploitable by man-in-the-middle attackers...

CVE-2023-50455

An issue was discovered in Zammad before 6.2.0. Due to lack of rate limiting in the "email address verification" feature, an attacker could send many requests for a known address to cause Denial Of Service generation of many emails, which would also spam the victim...

CVE-2018-1000154

Zammad GmbH Zammad version 2.3.0 and earlier contains a Improper Neutralization of Script-Related HTML Tags in a Web Page CWE-80 vulnerability in the subject of emails which are not html quoted in certain cases. This can result in the embedding and execution of java script code on users browser...

CVE-2022-35490

Zammad 5.2.0 is vulnerable to privilege escalation. Zammad has a prevention against brute-force attacks trying to guess login credentials. After a configurable amount of attempts, users are invalidated and logins prevented. An attacker might work around this prevention, enabling them to send more...

CVE-2022-35489

In Zammad 5.2.0, customers who have secondary organizations assigned were able to see all organizations of the system rather than only those to which they are assigned...

CVE-2022-35487

Zammad 5.2.0 suffers from Incorrect Access Control. Zammad did not correctly perform authorization on certain attachment endpoints. This could be abused by an unauthenticated attacker to gain access to attachments, such as emails or attached files...

CVE-2022-35488

In Zammad 5.2.0, an attacker could manipulate the rate limiting in the 'forgot password' feature of Zammad, and thereby send many requests for a known account to cause Denial Of Service by many generated emails which would also spam the victim...

CVE-2020-10097

An issue was discovered in Zammad 3.0 through 3.2. It may respond with verbose error messages that disclose internal application or infrastructure information. This information could aid attackers in successfully exploiting other vulnerabilities...

CVE-2020-10103

An XSS issue was discovered in Zammad 3.0 through 3.2. Malicious code can be provided by a low-privileged user through the File Upload functionality in Zammad. The malicious JavaScript will execute within the browser of any user who opens a specially crafted link to the uploaded file with an acti...

CVE-2020-10100

An issue was discovered in Zammad 3.0 through 3.2. It allows for users to view ticket customer details associated with specific customers. However, the application does not properly implement access controls related to this functionality. As such, users of one company are able to access ticket da...

CVE-2020-10098

An XSS issue was discovered in Zammad 3.0 through 3.2. Malicious code can be provided by a low-privileged user through the Email functionality. The malicious JavaScript will execute within the browser of any user who opens the Ticket with the Article created from that Email...

CVE-2020-10104

An issue was discovered in Zammad 3.0 through 3.2. After authentication, it transmits sensitive information to the user that may be compromised and used by an attacker to gain unauthorized access. Hashed passwords are returned to the user when visiting a certain URL...