Auth bypass in Zammad

CVE-2023-31597

An issue in Zammad v5.4.0 allows attackers to bypass e-mail verification using an arbitrary address and manipulate the data of the generated user. Attackers are also able to gain unauthorized access to existing tickets.

Vulnerability class: Broken Access Control

EPSS: 0.004 (34.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2023-31597?
CVE-2023-31597 is a medium-severity vulnerability in Zammad, classified under Incorrect Authorization. CVSS score: 6.5/10. Published 2023-05-18.
How severe is CVE-2023-31597?
Medium severity. CVSS v3 base score is 6.5 out of 10.