EUVD-2026-87258

Zammad is a web based open source helpdesk/customer support system. Prior to 7.1.2, zammad's HTML sanitizer, which blocks remote images in ticket articles and email views, can be bypassed using a shortened URL format that omits the double slash after the scheme for example a shortened HTTP URL...

CVE-2026-56723

The Zammad helpdesk and customer support system contains an authorization bypass in versions prior to 7.0.2 . While internal ticket articles are correctly hidden from customers via the article listing API, the attachment download endpoint fails to enforce article-level authorization. This allows ...

EUVD-2026-87205

Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.2, a customer who can view a ticket cannot see internal ticket articles through the article listing API. However, the same customer can directly request an attachment belonging to an internal article via the attachme...

CVE-2026-34718

Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.1 and 6.5.4, the HTML sanitizer for ticket articles was missing proper sanitization of data: ... URI schemes, resulting in storing such malicious content in the database of the Zammad instance. The Zammad GUI is...

CVE-2026-48208 Denial-of-Service via SVG Rendering in Ticket

An improper neutralization of active SVG content in OTRS or OTRS Community Edition ticket article rendering allows attackers to inject specially crafted SVG payloads via email content, leading to browser-side resource exhaustion and denial of service when affected tickets are opened by an agent o...

OTRS 安全漏洞

OTRS is a service management solution developed by the German company OTRS. Versions 7.0.X, 8.0.X, 2023.X, 2024.X, 2025.X, and 2026.X up to version 2026.4.X of OTRS contained security vulnerabilities. These vulnerabilities were due to improper handling of SVG content during the rendering of ticke...

EUVD-2026-20558

Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.1 and 6.5.4, the HTML sanitizer for ticket articles was missing proper sanitization of data: ... URI schemes, resulting in storing such malicious content in the database of the Zammad instance. The Zammad GUI is...

CVE-2026-34718 Zammad improperly neutralizes of script-related HTML tags in ticket articles

Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.1 and 6.5.4, the HTML sanitizer for ticket articles was missing proper sanitization of data: ... URI schemes, resulting in storing such malicious content in the database of the Zammad instance. The Zammad GUI is...

CVE-2026-34718 Zammad improperly neutralizes of script-related HTML tags in ticket articles

Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.1 and 6.5.4, the HTML sanitizer for ticket articles was missing proper sanitization of data: ... URI schemes, resulting in storing such malicious content in the database of the Zammad instance. The Zammad GUI is...

CVE-2026-34718

CVE-2026-34718 affects Zammad, a web-based open source helpdesk system. The vulnerability stems from improper sanitization in the HTML sanitizer for ticket articles, which failed to neutralize certain data URI schemes, allowing malicious content to be stored in the database. The issue is mitigate...

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-2026-34718: Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS)

Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.1 and 6.5.4, the HTML sanitizer for ticket articles was missing proper sanitization of data: ... URI schemes, resulting in storing such malicious content in the database of the Zammad instance. The Zammad GUI is...

SUSE CVE-2017-16854

In Open Ticket Request System OTRS through 3.3.20, 4 through 4.0.26, 5 through 5.0.24, and 6 through 6.0.1, an attacker who is logged in as a customer can use the ticket search form to disclose internal article information of their customer tickets...

Zammad Access Control Error Vulnerability

Zammad is a Web-based open source helpdesk/customer support system. An access control error vulnerability exists in Zammad versions prior to 3.5.1. An attacker can exploit this vulnerability to bypass auditing and change Ticket Article data via REST API calls...

DEBIAN-CVE-2010-4760

Open Ticket Request System OTRS before 3.0.0-beta6 adds email-notification-ext articles to tickets during processing of event-based notifications, which allows remote authenticated users to obtain potentially sensitive information by reading a ticket...