What is CVE-2018-20703?

CVE-2018-20703 is a medium-severity vulnerability in Cubecart, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2019-01-13.

How severe is CVE-2018-20703?

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

XSS in Cubecart

CVE-2018-20703

CubeCart 6.2.2 has Reflected XSS via a /{ADMIN-FILE}/ query string.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2019-01-13 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

EPSS exploit prediction

EPSS: 0.006 (48.4th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 48th percentile — 48.4% 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

Cubecart — versions 6.2.2

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

www.netsparker.com/web-applications-advisories/ns-18-025-reflected-cross-site-s… (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2018-20703?: CVE-2018-20703 is a medium-severity vulnerability in Cubecart, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2019-01-13.
How severe is CVE-2018-20703?: Medium severity. CVSS v3 base score is 5.4 out of 10.