What is CVE-2026-18400?

CVE-2026-18400 is a medium-severity vulnerability in Metaslider Slider, Gallery, And Carousel By – Image Video Slider, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2026-08-06.

How severe is CVE-2026-18400?

Medium severity. CVSS v3 base score is 6.4 out of 10.

XSS in Metaslider Slider, Gallery, And Carousel By – Image Video Slider

CVE-2026-18400

The Slider, Gallery, and Carousel by MetaSlider – Image Slider, Video Slider plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'delay' Post Meta Setting in all versions up to, and including, 3.111.0 due to insufficient…

Vulnerability class: XSS (Cross-Site Scripting)

CVSS v3 metric

CVSS v3 base score 6.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N.

Affected products

Metaslider Slider, Gallery, And Carousel By – Image Video Slider — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

Frequently asked questions

What is CVE-2026-18400?: CVE-2026-18400 is a medium-severity vulnerability in Metaslider Slider, Gallery, And Carousel By – Image Video Slider, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2026-08-06.
How severe is CVE-2026-18400?: Medium severity. CVSS v3 base score is 6.4 out of 10.