---
id: "CVE-2026-111738"
kind: "vulnerability"
aliases: ["CVE-2026-111738"]
title: "Speed Optimizer WordPress plugin lets site admins change network-wide options"
severity: "medium"
cvss: 5.5
epss: 0.00132
exploited: false
status: "open"
category: "package"
products: []
ecosystems: []
tags: ["package", "speed-optimizer", "wordpress", "wordpress-multisite"]
not_affected_if: ["no-multisite", "plugin-version-7.8.5-or-later", "single-site-install"]
published_at: "2026-10-23T06:17:05+00:00"
first_seen_at: "2026-10-23T21:57:32+00:00"
updated_at: "2026-10-25T04:10:39+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-111738", "first_seen_at": "2026-10-23T21:57:32+00:00"}, {"source": "epss", "url": "https://api.first.org/data/v1/epss?cve=CVE-2026-111738", "first_seen_at": "2026-10-24T07:15:51+00:00"}]
---

# Speed Optimizer WordPress plugin lets site admins change network-wide options

The Speed Optimizer WordPress plugin before 7.8.5 does not check network-level privilege before applying option changes across a multisite network. A site administrator who is not a Super Admin can create or overwrite network-wide options.

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

## How to check

- Check the installed Speed Optimizer version in the WordPress admin plugin list or with `wp plugin get speed-optimizer --field=version`
- Check whether the site runs WordPress multisite with `wp core is-installed --network`
- Check the list of Super Admins with `wp super-admin list`

## Fix

- Update Speed Optimizer to `7.8.5` or later
- Review network options changed by non-Super Admin accounts if the plugin was vulnerable

## Timeline

- 2026-10-23T21:57:32+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-111738
- 2026-10-24T07:15:51+00:00 epss https://api.first.org/data/v1/epss?cve=CVE-2026-111738

## From the sources

The Speed Optimizer  WordPress plugin before 7.8.5 does not verify network-level privilege before applying an option change to the whole multisite network, nor restrict which option may be changed, allowing a site administrator who is not a Super Admin to create or overwrite network-wide options.

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