What is CVE-2026-34723?

CVE-2026-34723 is a high-severity vulnerability in Zammad, classified under Improper Access Control. CVSS score: 7.5/10. Published 2026-04-08.

How severe is CVE-2026-34723?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Zammad

CVE-2026-34723

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.

EPSS: 0.004 (36.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Zammad — versions < 6.5.4, 7.0.0, >= 7.0.0-alpha, < 7.0.1

Weakness classification (CWE)

CWE-284 — Improper Access Control

References

security-advisories@github.com (x_refsource_CONFIRM, Vendor Advisory)

Frequently asked questions

What is CVE-2026-34723?: CVE-2026-34723 is a high-severity vulnerability in Zammad, classified under Improper Access Control. CVSS score: 7.5/10. Published 2026-04-08.
How severe is CVE-2026-34723?: High severity. CVSS v3 base score is 7.5 out of 10.