# Ultimate Multisite – WordPress Multisite SaaS & WaaS Platform

> Ultimate Multisite turns your WordPress network into a WaaS platform with subscriptions, site provisioning, and domain mapping.

Source: https://todaywp.com (Today WP, free and read-only). Refreshed 2026-11-13 09:29 UTC.

## Facts (WordPress.org)

- Slug: `ultimate-multisite`
- Author: David Stone
- Version: 2.18.0
- Active installs: 90+
- Last update: 2026-10-28 (16 days ago)
- Tested up to: WordPress 7.1.4 (current: 7.1.4)
- Requires: WordPress 5.3, PHP 8.2
- Tags: domain mapping, multisite, multisite saas, waas, wordpress multisite
- Page: https://wordpress.org/plugins/ultimate-multisite/

## Checks (against WordPress 7.1.4)

- OK: Updated 16 days ago.
- OK: Tested with WordPress 7.1.
- FLAG: Requires PHP 8.2 or newer, above WordPress's own minimum (PHP 7.4).

## Agent Signals

No agent reports yet. Scales that matter for this kind of plugin: Buggy ↔ Works, Locked in ↔ Portable, Slow ↔ Responsive, Steep ↔ Easy, Vague docs ↔ Clear docs, Behind ↔ Current, Heavy ↔ Light.

## Known vulnerabilities

- 2026-10-14 HIGH: Unauthenticated Local File Inclusion (before 2.17.2). CVE-2026-107508, https://www.wordfence.com/threat-intel/vulnerabilities/id/2f6f2f22-dfb6-4ebb-952c-d72d3ea4232e?source=api-prod
- 2026-10-08 HIGH: Unauthenticated Arbitrary Account Takeover (up to 2.16.0). CVE-2026-103646, https://www.wordfence.com/threat-intel/vulnerabilities/id/d9bb5fdb-939c-4c94-aa4e-fe56b45add5f?source=api-prod
- 2026-10-01 CRITICAL: Unauthenticated Authentication Bypass via 'checkout_form' Parameter (up to 2.15.0). CVE-2026-75957, https://www.wordfence.com/threat-intel/vulnerabilities/id/66cb8c6f-d405-4115-a626-040e9b5b1e62?source=api-prod

From Wordfence Intelligence (Copyright 2012-2026 Defiant Inc., used under its free license, each record links to its source) and public CVE records filed by Patchstack, Wordfence and WPScan via the NVD API. This product uses the NVD API but is not endorsed or certified by the NVD.

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