What is CVE-2020-5679?

CVE-2020-5679 is a medium-severity vulnerability in Ec-Cube, classified under Improper Restriction of Rendered UI Layers or Frames (Clickjacking). CVSS score: 6.1/10. Published 2020-12-03.

How severe is CVE-2020-5679?

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

Vulnerability in Ec-Cube

CVE-2020-5679

Improper restriction of rendered UI layers or frames in EC-CUBE versions from 3.0.0 to 3.0.18 leads to clickjacking attacks. If a user accesses a specially crafted page while logged into the administrative page, unintended operations may be conducted.

Published 2020-12-03 · 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: 0.007 (49.8th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 50th percentile — 49.8% 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

Ec-Cube
Ec-Cube Co.,ltd. — versions versions from 3.0.0 to 3.0.18

Weakness classification (CWE)

CWE-1021 — Improper Restriction of Rendered UI Layers or Frames (Clickjacking)

References

www.ec-cube.net/info/weakness/ (Vendor Advisory)
jvn.jp/en/jp/JVN24457594/index.html (Third Party Advisory)

Frequently asked questions

What is CVE-2020-5679?: CVE-2020-5679 is a medium-severity vulnerability in Ec-Cube, classified under Improper Restriction of Rendered UI Layers or Frames (Clickjacking). CVSS score: 6.1/10. Published 2020-12-03.
How severe is CVE-2020-5679?: Medium severity. CVSS v3 base score is 6.1 out of 10.