What is CVE-2021-20828?

CVE-2021-20828 is a medium-severity vulnerability in Activefusions Order Status Batch Change, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-09-17.

How severe is CVE-2021-20828?

Medium severity. CVSS v3 base score is 6.1 out of 10.

XSS in Activefusions Order Status Batch Change

CVE-2021-20828

Cross-site scripting vulnerability in Order Status Batch Change Plug-in (for EC-CUBE 3.0 series) all versions allows a remote attacker to inject an arbitrary script via unspecified vectors.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2021-09-17 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.008 (55.7th percentile), scored 2026-10-31.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 55.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000

Affected products

Activefusions Order Status Batch Change
Activefusions Co., Ltd. Order Status Batch Change Plug-In (For Ec-Cube 3.0 Series) — versions all versions
Ec-Cube — versions 3.0.0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

www.activefusions.com/news/2021/20210915.html (Third Party Advisory)
jvn.jp/en/jp/JVN23406150/index.html (Third Party Advisory)

Frequently asked questions

What is CVE-2021-20828?: CVE-2021-20828 is a medium-severity vulnerability in Activefusions Order Status Batch Change, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-09-17.
How severe is CVE-2021-20828?: Medium severity. CVSS v3 base score is 6.1 out of 10.