# SiteGround Speed Optimizer vulnerabilities

Source: https://junglewise.ai/threats/technologies/speed-optimizer  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Updated: 9 November 2026, 03:07 UTC. Rebuilt every hour.  
Data: https://junglewise.ai/threats/technologies/speed-optimizer.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 3 vulnerabilities in SiteGround Speed Optimizer: 0 in the last 7 days and 2 in the last 90 days, 0 of them critical and 0 exploited in the wild. The most recent, CVE-2026-111738, was published on 23 October 2026. 2 vulnerabilities in the last four weeks, up from none in the four before.

## Counts

- Last 7 days: 0
- Last 30 days: 2
- Last 90 days: 2
- All time: 3 (0 critical, 0 exploited in the wild)

## About SiteGround Speed Optimizer

SiteGround Speed Optimizer is a WordPress plugin designed to improve website performance through caching and frontend optimizations.

## Latest SiteGround Speed Optimizer vulnerabilities

- [CVE-2026-111738: Speed Optimizer plugin privilege escalation in network option handling](https://junglewise.ai/threats/cve-2026-111738-the-speed-optimizer-wordpress-plugin-before-7-8-5-does-not) (info, published 23 Oct 2026)
- [CVE-2026-111737: Speed Optimizer WordPress plugin stored XSS in settings](https://junglewise.ai/threats/cve-2026-111737-the-speed-optimizer-wordpress-plugin-before-7-8-5-does-not) (info, published 23 Oct 2026)
- [CVE-2026-3220: Multiple WordPress Plugins Stored XSS in HTML Minification](https://junglewise.ai/threats/cve-2026-3220-multiple-wordpress-plugins-stored-xss-in-html-minification) (info, CVSS 8.8, published 18 May 2026)

## Most severe SiteGround Speed Optimizer vulnerabilities

- [CVE-2026-3220: Multiple WordPress Plugins Stored XSS in HTML Minification](https://junglewise.ai/threats/cve-2026-3220-multiple-wordpress-plugins-stored-xss-in-html-minification) (info, CVSS 8.8, published 18 May 2026)
- [CVE-2026-111738: Speed Optimizer plugin privilege escalation in network option handling](https://junglewise.ai/threats/cve-2026-111738-the-speed-optimizer-wordpress-plugin-before-7-8-5-does-not) (info, published 23 Oct 2026)
- [CVE-2026-111737: Speed Optimizer WordPress plugin stored XSS in settings](https://junglewise.ai/threats/cve-2026-111737-the-speed-optimizer-wordpress-plugin-before-7-8-5-does-not) (info, published 23 Oct 2026)

## Vulnerabilities per week

2 vulnerabilities in the last four weeks, up from none in the four before.

| Week of | Vulns | Critical | Exploited |
| --- | --- | --- | --- |
| 17 Aug 2026 | 0 | 0 | 0 |
| 24 Aug 2026 | 0 | 0 | 0 |
| 31 Aug 2026 | 0 | 0 | 0 |
| 7 Sep 2026 | 0 | 0 | 0 |
| 14 Sep 2026 | 0 | 0 | 0 |
| 21 Sep 2026 | 0 | 0 | 0 |
| 28 Sep 2026 | 0 | 0 | 0 |
| 5 Oct 2026 | 0 | 0 | 0 |
| 12 Oct 2026 | 0 | 0 | 0 |
| 19 Oct 2026 | 2 | 0 | 0 |
| 26 Oct 2026 | 0 | 0 | 0 |
| 2 Nov 2026 | 0 | 0 | 0 |
| 9 Nov 2026 | 0 | 0 | 0 |

## Sources

NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "SiteGround Speed Optimizer vulnerabilities", https://junglewise.ai/threats/technologies/speed-optimizer, 9 November 2026.