---
id: "CVE-2026-119054"
kind: "vulnerability"
aliases: ["CVE-2026-119054"]
title: "Multiple Pages Generator WordPress plugin: stored XSS via shortcode base-url"
severity: "medium"
cvss: 5.4
epss: null
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["multiple-pages-generator", "package", "wordpress"]
not_affected_if: ["no-contributor-users", "plugin-not-installed", "version-4.2.5-or-later"]
published_at: "2026-10-29T14:17:52+00:00"
first_seen_at: "2026-10-29T14:25:23+00:00"
updated_at: "2026-10-29T14:26:04+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-119054", "first_seen_at": "2026-10-29T14:25:23+00:00"}]
---

# Multiple Pages Generator WordPress plugin: stored XSS via shortcode base-url

The Multiple Pages Generator plugin for WordPress, before 4.2.5, lets a Contributor-level user store entity-encoded script in the base-url attribute of its [mpg] and [mpg_match] shortcodes. The payload is decoded and rendered unescaped, so it runs in an administrator's browser when they view the content.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed Multiple Pages Generator plugin version in the WordPress admin Plugins screen; versions below `4.2.5` are affected.
- Search post and page content for `[mpg` or `[mpg_match` shortcodes with a base-url attribute.

## Fix

- Multiple Pages Generator by Themeisle: `4.2.5`

## Timeline

- 2026-10-29T14:25:23+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-119054

## From the sources

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.

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_