Vulnerability · Published Oct 23, 2026 · Assigned by WPScan
CVE-2026-111737Speed Optimizer < 7.8.5 - Admin+ Stored XSS via DNS Prefetch and Font Preload URL Lists
Low 3.5
In plain English
A low-severity cross-site scripting in Speed Optimizer from Unknown. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 8% of all known vulnerabilities).
Severity (CVSS 3.1)3.5Low
Exploit odds (30 days)0.2%top 91.8% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official 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).
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Unknown | Speed Optimizer | 0 – before 7.8.5 |
Weakness: CWE-79 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:L/A:N
References
- https://wpscan.com/vulnerability/308b6173-139d-4940-869d-c9ff1e83c323/ exploit, vdb-entry, technical-description