What is CVE-2022-28522?

CVE-2022-28522 is a medium-severity vulnerability in Zcms Project, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2022-04-26.

How severe is CVE-2022-28522?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Zcms Project

CVE-2022-28522

ZCMS v20170206 was discovered to contain a stored cross-site scripting (XSS) vulnerability via index.php?m=home&c=message&a=add.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2022-04-26 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.006 (47.0th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 47th percentile — 47.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.006 · newest: 0.006 · change: +0.000

Affected products

Zcms Project — versions 20170206

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

github.com/jorycn/thinkphp-zcms/issues/5 (Exploit, Third Party Advisory)
github.com/zhendezuile/bug_report/blob/main/zcms (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2022-28522?: CVE-2022-28522 is a medium-severity vulnerability in Zcms Project, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2022-04-26.
How severe is CVE-2022-28522?: Medium severity. CVSS v3 base score is 5.4 out of 10.