CVE-2026-56727 Zammad: PGP signature spoofing via unvalidated verification return

Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.2, summary In Zammad's inbound PGP email processing, the return value of the gpg verification call was silently discarded. Regardless of whether gpg reported a valid, invalid, or missing signature, the handler...

CVE-2026-56734

The open-source helpdesk system Zammad (versions prior to 7.0.2 ) is vulnerable to Server-Side Request Forgery (SSRF) during federated authentication (OAuth/OIDC/SAML). The application fetches profile image URLs from external identity providers without validating the target address. An attacker c...

CVE-2026-56734 Zammad: Avatar Image URL Server-Side Request Forwarding

Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.2, during federated authentication OAuth/OIDC/SAML, a profile image URL from the external identity provider is fetched without verifying the target address. An actor who controls their profile at a connected provider...

CVE-2026-56734 Zammad: Avatar Image URL Server-Side Request Forwarding

Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.2, during federated authentication OAuth/OIDC/SAML, a profile image URL from the external identity provider is fetched without verifying the target address. An actor who controls their profile at a connected provider...

EUVD-2026-87213

Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.2, during federated authentication OAuth/OIDC/SAML, a profile image URL from the external identity provider is fetched without verifying the target address. An actor who controls their profile at a connected provider...

CVE-2026-56734 Zammad: Avatar Image URL Server-Side Request Forwarding

Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.2, during federated authentication OAuth/OIDC/SAML, a profile image URL from the external identity provider is fetched without verifying the target address. An actor who controls their profile at a connected provider...

CVE-2026-56726 Zammad: Missing authorization check in GitHub + GitLab integration allows cross-ticket data leak

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...

EUVD-2026-87212

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-2026-56726 Zammad: Missing authorization check in GitHub + GitLab integration allows cross-ticket data leak

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-2026-56726

The Zammad open source helpdesk system contains a vulnerability in versions prior to 7.0.2 where a missing authorization check in the GitHub and GitLab integrations breaks ticket isolation boundaries. Any authenticated agent, regardless of their assigned tickets, can view the titles, status, labe...

CVE-2026-56726 Zammad: Missing authorization check in GitHub + GitLab integration allows cross-ticket data leak

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-2026-56729

The open-source helpdesk system Zammad is vulnerable to unauthorized information disclosure in versions prior to 7.0.2 . When multiple Knowledge Base (KB) categories are configured with different editor roles, a user assigned the knowledge_base.editor role in one category can view answer titles a...

CVE-2026-56729 Zammad: Titles of knowledge base answers will be shown across all categories via the global search

Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.2, when multiple KB categories have different editor roles assigned, a user with knowledgebase.editor in one category can see answer titles and updatedat timestamps from categories they do not have editor access to ,...

EUVD-2026-87208

Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.2, when multiple KB categories have different editor roles assigned, a user with knowledgebase.editor in one category can see answer titles and updatedat timestamps from categories they do not have editor access to ,...

CVE-2026-56729 Zammad: Titles of knowledge base answers will be shown across all categories via the global search

Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.2, when multiple KB categories have different editor roles assigned, a user with knowledgebase.editor in one category can see answer titles and updatedat timestamps from categories they do not have editor access to ,...

CVE-2026-56729 Zammad: Titles of knowledge base answers will be shown across all categories via the global search

Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.2, when multiple KB categories have different editor roles assigned, a user with knowledgebase.editor in one category can see answer titles and updatedat timestamps from categories they do not have editor access to ,...

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-2026-56723 Zammad: Missing authorization on ticket attachment download

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-2026-56723

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 ...

CVE-2026-56723 Zammad: Missing authorization on ticket attachment download

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...