What is CVE-2026-1851?

CVE-2026-1851 is a medium-severity vulnerability in Deckercz Ivysilani Shortcode, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2026-03-21.

How severe is CVE-2026-1851?

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

XSS in Deckercz Ivysilani Shortcode

CVE-2026-1851

The iVysilani Shortcode plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'width' shortcode attribute in all versions up to, and including, 3.0 due to insufficient input sanitization and output escaping. This makes…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.000 (14.3th percentile) — read the EPSS interpretation.

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

Deckercz Ivysilani Shortcode — versions 0

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

www.wordfence.com/threat-intel/vulnerabilities/id/25fc2600-9b57-405e-9956-b5529…
plugins.trac.wordpress.org/browser/ivysilani-shortcode/trunk/ivysilani-shortcod…
wordpress.org/plugins/ivysilani-shortcode/
plugins.trac.wordpress.org/browser/ivysilani-shortcode/tags/3.0/ivysilani-short…

Frequently asked questions

What is CVE-2026-1851?: CVE-2026-1851 is a medium-severity vulnerability in Deckercz Ivysilani Shortcode, classified under Cross-site Scripting. CVSS score: 6.4/10. Published 2026-03-21.
How severe is CVE-2026-1851?: Medium severity. CVSS v3 base score is 6.4 out of 10.