What is CVE-2022-27331?

CVE-2022-27331 is a medium-severity vulnerability in Zammad, classified under Exposure of Resource to Wrong Sphere. CVSS score: 4.3/10. Published 2022-04-27.

How severe is CVE-2022-27331?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Vulnerability in Zammad

CVE-2022-27331

An access control issue in Zammad v5.0.3 broadcasts administrative configuration changes to all users who have an active application instance, including settings that should only be visible to authenticated users.

Published 2022-04-27 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.007 (51.2th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 51.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.007 · newest: 0.007 · change: +0.000

Affected products

Zammad

Weakness classification (CWE)

CWE-668 — Exposure of Resource to Wrong Sphere

References

zammad.com/de/advisories/zaa-2022-02 (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2022-27331?: CVE-2022-27331 is a medium-severity vulnerability in Zammad, classified under Exposure of Resource to Wrong Sphere. CVSS score: 4.3/10. Published 2022-04-27.
How severe is CVE-2022-27331?: Medium severity. CVSS v3 base score is 4.3 out of 10.