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zammad

Vendor: zammad

Actively Exploited 2 CISA KEV List
PoC / Exploits 2 Code Available
Total RCEs 8 Remote Access
Total CVEs 226 Total Indexed
Avg. EPSS 0.75% Exploit Prob.
Latest CVE CVE-2026-102490 Sep 30

Security Vulnerability Index

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7.5 CVSS

Incorrect Access Control in Zammad 1.0.x up to 4.0.0 allows attackers to obtain sensitive information via email connection configuration probing.

EPSS: 1.12%
6.1 CVSS

Cross Site Scripting (XSS) in Zammad 1.0.x up to 4.0.0 allows remote attackers to execute arbitrary web script or HTML via multiple models that contain a 'note' field to store additional information.

EPSS: 1.47%
7.5 CVSS

An issue was discovered in Zammad before 3.5.1. A REST API call allows an attacker to change Ticket Article data in a way that defeats auditing.

EPSS: 0.91%
4.9 CVSS

An issue was discovered in Zammad before 3.5.1. The default signup Role (for newly created Users) can be a privileged Role, if configured by an admin. This behvaior was unintended.

EPSS: 0.93%
4.3 CVSS

An issue was discovered in Zammad before 3.5.1. An Agent with Customer permissions in a Group can bypass intended access control on internal Articles via the Ticket detail view.

EPSS: 0.68%
5.4 CVSS

An issue was discovered in Zammad before 3.4.1. There is Stored XSS via a Tags element in a TIcket.

EPSS: 0.55%
4.3 CVSS

An account-enumeration issue was discovered in Zammad before 3.4.1. The Create User functionality is implemented in a way that would enable an anonymous user to guess valid user email addresses. The application responds differently depending on whether the input supplied was recognized as associated with a valid user.

EPSS: 0.73%
5.4 CVSS

An issue was discovered in Zammad before 3.4.1. The Tag and Link REST API endpoints (for add and delete) lack a CSRF token check.

EPSS: 0.36%
7.5 CVSS

An SSRF issue was discovered in Zammad before 3.4.1. The SMS configuration interface for Massenversand is implemented in a way that renders the result of a test request to the User. An attacker can use this to request any URL via a GET request from the network interface of the server. This may lead to disclosure of information from intranet systems.

EPSS: 1.08%
4.3 CVSS

An issue was discovered in Zammad before 3.4.1. The global-search feature leaks Knowledge Base drafts to Knowledge Base readers (who are authenticated but have insufficient permissions).

EPSS: 0.64%