Auth bypass in Zammad

CVE-2020-26028

An issue was discovered in Zammad before 3.4.1. Admin Users without a ticket.* permission can access Tickets.

Vulnerability class: Broken Access Control

EPSS: 0.009 (54.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N.

Affected products

Zammad
N/a — versions n/a

Weakness classification (CWE)

CWE-863 — Incorrect Authorization

References

cve@mitre.org (x_refsource_MISC, Vendor Advisory)

Frequently asked questions

What is CVE-2020-26028?: CVE-2020-26028 is a medium-severity vulnerability in Zammad, classified under Incorrect Authorization. CVSS score: 4.9/10. Published 2020-12-28.
How severe is CVE-2020-26028?: Medium severity. CVSS v3 base score is 4.9 out of 10.