CVE-2026-111737 Details
Description
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).
A stored cross-site scripting vulnerability has been identified in the Speed Optimizer WordPress plugin, affecting versions prior to 7.8.5. The issue arises because the plugin fails to properly sanitize or escape certain settings before displaying them in the head of front-end pages. This flaw could enable high-privilege users, such as administrators, to execute stored cross-site scripting attacks, even in environments where the unfiltered_html capability is restricted, such as multisite setups.
Users are advised to update the Speed Optimizer WordPress plugin to version 7.8.5 or later.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Oct 23, 2026CISA-ADP
Assessed Oct 23, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://wpscan.com/vulnerability/308b6173-139d-4940-869d-c9ff1e83c323/ | [email protected] | AdvisoryExploitRemedy |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-79 | Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') | CISA-ADP |
Affected Products
| Product | Versions |
|---|---|
| Speed Optimizer | < 7.8.5 (semver) |
CPE
Remediation
| |
Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Oct 23, 2026 | CVE Modified | CISA-ADP |
| Oct 23, 2026 | New CVE Received | [email protected] |