Vulnerability · Published Oct 29, 2026 · Assigned by VulnCheck

CVE-2026-119054Multiple Pages Generator by Themeisle before 4.2.5 Stored XSS via Shortcode base-url

Medium 5.4

In plain English

A medium-severity cross-site scripting in Multiple Pages Generator by Themeisle from Themeisle. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 13% of all known vulnerabilities).

Severity (CVSS 3.1)5.4Medium

Exploit odds (30 days)0.2%top 86.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: none

Attack toolingNoneno public tooling known

Official description

Multiple Pages Generator by Themeisle before 4.2.5 contains a stored cross-site scripting vulnerability that allows Contributor-level users to inject script via the [mpg] and [mpg_match] shortcode base-url attribute. Attackers can store entity-encoded payloads that pass kses but are decoded by html_entity_decode() and rendered unescaped through {{mpg_url}}, executing script in administrators' browsers.

Affected products (as reported)

Vendor	Product	Versions
Themeisle	Multiple Pages Generator by Themeisle	0 – before 4.2.5

Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

References

WordPress Plugin Changeset 3742674 patch
https://plugins.svn.wordpress.org/multiple-pages-generator-by-porthas/tags/4.2.4/controllers/display/loop/Core.php technical-description
https://plugins.svn.wordpress.org/multiple-pages-generator-by-porthas/tags/4.2.4/controllers/display/Base_Display.php technical-description
https://plugins.svn.wordpress.org/multiple-pages-generator-by-porthas/tags/4.2.4/models/CoreModel.php technical-description
WordPress Plugin Page product
VulnCheck Advisory: Multiple Pages Generator by Themeisle before 4.2.5 Stored XSS via Shortcode base-url third-party-advisory