Vulnerability · Published Apr 8, 2026 · Assigned by GitHub_M

CVE-2026-34723Zammad has incorrect access control in getting_started_controller

High 7.5

In plain English

A high-severity improper access control in zammad from zammad. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 39% of all known vulnerabilities).

Severity (CVSS 3.1)7.5High

Exploit odds (30 days)0.5%top 60.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Zammad is a web based open source helpdesk/customer support system. Prior to 7.0.1 and 6.5.4, unauthenticated remote attackers were able to access the getting started endpoint to get access to sensitive internal entity data, even after the system setup was completed. This vulnerability is fixed in 7.0.1 and 6.5.4.

Affected products (as reported)

Vendor	Product	Versions
zammad	zammad	< 6.5.4>= 7.0.0-alpha, < 7.0.1

Weakness: CWE-284 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

References

https://github.com/zammad/zammad/security/advisories/GHSA-hcm9-ch62-5727 x_refsource_CONFIRM