PT-2026-99085

Name of the Vulnerable Software and Affected Versions Zammad versions prior to 7.1.2 Description When the "Automatic account link on initial logon" setting is enabled, the system binds an incoming third-party Single Sign-On SSO identity to an existing local account by matching the reported email...

CVE-2026-84458: Improper Authentication

Zammad is a web based open source helpdesk/customer support system. Prior to 7.1.2, when the "Automatic account link on initial logon" setting is enabled, Zammad binds an incoming third-party SSO identity to an existing local account by matching the email address the identity provider reports,...

PT-2026-98939

Name of the Vulnerable Software and Affected Versions Zammad versions prior to 7.0.2 Description An unauthenticated remote attacker can cause a denial of service on a production instance. This occurs because the import check and import status actions lack the setup done response guard, allowing...

PT-2026-99088

Name of the Vulnerable Software and Affected Versions Zammad versions prior to 7.1.2 Description Users with Knowledge Base editing rights for a category can embed a video widget in a published answer using a specially crafted value. Because this value is inserted into the page HTML without being...

PT-2026-98946

Name of the Vulnerable Software and Affected Versions Zammad versions prior to 7.0.2 Description Zammad is a web-based open source helpdesk and customer support system. A flaw in the HTML sanitization process allows the injection of specific HTML elements into ticket bodies. When a user views a...

PT-2026-98940

Name of the Vulnerable Software and Affected Versions Zammad versions prior to 7.0.2 Description An issue in the ticket isolation mechanism allows any authenticated agent to bypass boundaries and view sensitive data from GitHub or GitLab issues attached to any ticket in the system. By querying...

PT-2026-98941

Name of the Vulnerable Software and Affected Versions Zammad versions prior to 7.0.2 Description In the inbound PGP email processing, the return value of the gpg verification call is silently discarded. The handler unconditionally marks the security preferences of the article as having a successf...

PT-2026-98957

Name of the Vulnerable Software and Affected Versions Zammad versions prior to 7.1.2 Description An authenticated attacker can silently remove temporary file uploads of another user before a ticket or article is submitted. This occurs because the destroy form action on the AttachmentsController...

CVE-2026-63208: Improper Encoding or Escaping of Output

Zammad is a web based open source helpdesk/customer support system. Prior to 7.1.2, when a Microsoft Graph request fails, Zammad logs the error including the authentication token used to access the mailbox. The system attempts to hide this token in the log, but the masking is incomplete: for the...

CVE-2026-56724: Authorization Bypass Through User-Controlled Key

Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.2, summary An issue with permission checks in the knowledge base management area has been identified. Under certain conditions, data validation for linked items was not fully enforced. This could have allowed users...

PT-2026-98942

Name of the Vulnerable Software and Affected Versions Zammad versions prior to 7.0.2 Description Broken access control in the GraphQL API allows an authenticated user to access taskbar item data belonging to another user. By crafting a request with the target user's taskbar identifier, an attacke...

CVE-2026-56728: Exposure of Sensitive Information to an Unauthorized Actor

Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.2, a broken access control vulnerability exists in Zammad's GraphQL API. An authenticated user can access taskbar item data belonging to another user by crafting a request with the target user's taskbar identifier. T...

CVE-2026-56726: Missing Authorization

Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.2, this vulnerability breaks normal ticket isolation boundaries between agents. Any authenticated agent, even one with no active tickets assigned to them, can view the titles, status, labels, and URL links of...

CVE-2026-84462: Improper Input Validation

Zammad is a web based open source helpdesk/customer support system. Prior to 7.1.2, a security filter that protects Zammad's AI Agent configuration can be bypassed by entering specially crafted text into one of an AI Agent's fields. An administrator with permission to create or edit AI Agents cou...

PT-2026-99087

Name of the Vulnerable Software and Affected Versions Zammad versions prior to 7.1.2 Description Zammad is a web-based open source helpdesk and customer support system. A flaw in the two-factor login process allows an attacker to perform unlimited password guesses for any account. This occurs...

PT-2026-99080

Name of the Vulnerable Software and Affected Versions Zammad versions prior to 7.1.2 Description When creating or updating an email signature, the system processes inline images in the signature body. If an HTML img tag points to an existing attachment, the system copies that attachment into a ne...

CVE-2026-63216: 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 7.1.2, unsanitized option labels are rendered in the configuration dialogs of AI Agents within Zammad's admin UI. When rendering the list of selected options, the option label is output as raw HTML without escaping. An...

CVE-2026-56731: Improper Neutralization of Input During Web Page Generation

Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.1, a low-privilege authenticated user may inject arbitrary HTML markup, including JavaScript event handlers, into a ticket title via the standard ticket creation workflow. The title is persisted without sanitization...

PT-2026-99083

Name of the Vulnerable Software and Affected Versions Zammad versions prior to 7.1.2 Description When a Microsoft Graph request fails, the system logs the error including the authentication token used to access the mailbox. Although the system attempts to mask the token, the process is incomplete...

PT-2026-98949

Name of the Vulnerable Software and Affected Versions Zammad versions prior to 7.0.2 Zammad versions prior to 7.1.0 Description The HTML sanitizer HtmlSanitizer::Strict fails to block external URLs within the srcset attribute of tags. While other external URLs are blocked to prevent remote conten...