What is CVE-2018-20368?

CVE-2018-20368 is a medium-severity vulnerability in Averta Master Slider, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2018-12-23.

How severe is CVE-2018-20368?

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

Is CVE-2018-20368 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

XSS in Averta Master Slider

CVE-2018-20368

The Master Slider plugin 3.2.7 and 3.5.1 for WordPress has XSS via the wp-admin/admin-ajax.php Name input field of the MSPanel.Settings value on Callback.

Vulnerability class: XSS (Cross-Site Scripting)

Published 2018-12-23 · 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: 0.007 (51.5th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 51.5% 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

Averta Master Slider — versions 3.2.7, 3.5.1

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

20142995/nuclei-templates

References

www.vulnerability-lab.com/get_content.php (Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2018-20368?: CVE-2018-20368 is a medium-severity vulnerability in Averta Master Slider, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2018-12-23.
How severe is CVE-2018-20368?: Medium severity. CVSS v3 base score is 5.4 out of 10.
Is CVE-2018-20368 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.