---
id: CVE-2026-111737
title: >-
  Speed Optimizer < 7.8.5 - Admin+ Stored XSS via DNS Prefetch and Font Preload
  URL Lists
summary: >-
  The Speed Optimizer  WordPress plugin before 7.8.5 does not sanitise or escape
  some of its settings before outputting them in the head of front-end pages,
  which could allow high-privilege users such as admins to perform Stored
  Cross-Site…
severity: low
cvss: 3.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N'
cvssSource: adp
cwe:
  - CWE-79
product: Speed Optimizer
affected:
  - speed_optimizer < 7.8.5
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-23T10:39:20.398155Z'
published: '2026-10-23'
updated: '2026-10-23'
sourceUpdated: '2026-10-23T10:46:04.684Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-111737'
references:
  - url: 'https://wpscan.com/vulnerability/308b6173-139d-4940-869d-c9ff1e83c323/'
tags:
  - cve.org
ingestedAt: '2026-10-23T06:17:25.172Z'
---

## Overview

The Speed Optimizer  WordPress plugin before 7.8.5 does not sanitise or escape some of its settings before outputting them in the head of front-end pages, which could allow high-privilege users such as admins to perform Stored Cross-Site Scripting attacks even when the unfiltered_html capability is disallowed (for example in a multisite setup).

## Affected

- `speed_optimizer < 7.8.5`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.