Plugin vulnerabilities
Is EWWW Image Optimizer safe? Known vulnerabilities and the version to run.
EWWW Image Optimizer: compresses images and converts them to WebP to make pages load faster.
The short answer
Run EWWW Image Optimizer 8.9.1 or later. That version has a fix for every known vulnerability that's been patched.
- Known vulnerabilities
- 14
- In the last 12 months
- 8
- Rated high or critical
- 3
- No fix yet
- 0
Every known EWWW Image Optimizer vulnerability
Newest first. The most recent was disclosed on 2 November 2026. Each one links to its full record on Wordfence.
| Vulnerability | Severity | Affected versions | Fixed in |
|---|---|---|---|
| EWWW Image Optimizer 8.7.4 - 8.9.0 - Authenticated (Author+) Stored Cross-Site ScriptingCVE-2026-91049 · 2 November 2026 | Medium 6.4 | 8.7.4 to 8.9.0 | 8.9.1 |
| Reflected Cross-Site Scripting via REQUEST_URI Parameter KeyCVE-2026-92826 · 2 October 2026 | Medium 6.1 | 8.7.7 and earlier | 8.8.0 |
| Authenticated (Contributor+) Stored Cross-Site ScriptingCVE-2026-97067 · 30 September 2026 | Medium 6.4 | 8.7.7 and earlier | 8.8.0 |
| EWWW Image Optimizer 8.6.0 - 8.7.7 - Authenticated (Author+) PHP Object InjectionCVE-2026-91051 · 28 September 2026 | High 7.5 | 8.6.0 to 8.7.7 | 8.8.0 |
| Authenticated (Administrator+) Cross-Site WebP File Deletion or RenameCVE-2026-91072 · 28 September 2026 | Medium 4.7 | 8.7.0 and earlier | 8.8.0 |
| Authenticated (Author+) Stored Cross-Site ScriptingCVE-2026-91011 · 15 September 2026 | Medium 6.4 | 8.7.6 and earlier | 8.7.7 |
| Unauthenticated Stored Cross-Site ScriptingCVE-2026-84773 · 2 September 2026 | High 7.2 | 8.7.6 and earlier | 8.7.7 |
| Authenticated (Contributor+) Stored Cross-Site Scripting via 'data-script' Lazy Load Attribute in Post ContentCVE-2026-15446 · 18 August 2026 | Medium 6.4 | 8.7.3 and earlier | 8.7.4 |
| Cross-Site Request ForgeryCVE-2024-31924 · 10 April 2024 | Medium 4.3 | 7.2.3 and earlier | 7.3.0 |
| Unauthenticated Sensitive Information Exposure via Debug LogCVE-2023-40600 · 14 November 2023 | Medium 5.3 | 7.2.0 and earlier | 7.2.1 |
| Sensitive Information Exposure8 September 2023 | Medium 5.3 | before 7.2.1 | 7.2.1 |
| Cross-Site Request Forgery BypassCVE-2020-36750 · 6 September 2020 | Medium 4.3 | 5.8.1 and earlier | 5.9 |
| Remote Code ExecutionCVE-2016-20010 · 8 June 2016 | Critical 9.6 | 2.8.4 and earlier | 2.8.5 |
| Reflected Cross-Site ScriptingCVE-2014-6243 · 9 October 2014 | Medium 6.1 | 2.0.1 and earlier | 2.0.2 |
If you run EWWW Image Optimizer
What to do now
- Check your version. In WordPress, go to Plugins and look under EWWW Image Optimizer. Compare it with the affected versions above.
- Update to 8.9.1 or later. Take a backup first, then update. If the update breaks something, you can restore the backup while you work out why.
- Check the rest of your site. One outdated plugin is rarely the only one. Our free security check looks at your WordPress version, and the plugins and theme it can see from the outside, for known flaws and emails you a report.
Pressfort keeps your plugins up to date for you, testing each update on a copy of your site first, and its virtual patching blocks attacks on newly disclosed flaws, often before a fix is out. If your site does get hacked, two clean-ups a year are included, with a developer stepping in when needed. See how it works.
Caching and performance
Related plugins
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SiteGround's caching and performance plugin, often preinstalled on sites hosted there.
5 known3 in the last year
WP Fastest Cache
A simple caching plugin for speeding up WordPress.
39 known5 in the last year
WP-Optimize
Cleans the database, compresses images and caches pages to speed a site up.
5 known2 in the last year
Smush
Compresses, resizes and lazy-loads images.
11 known5 in the last year
WP Super Cache
Automattic's page caching plugin, which serves static copies of pages to speed sites up.
12 known
Data sources and licences
Vulnerability data comes from Wordfence Intelligence and is refreshed daily. Severity is the CVSS score given in each record. Pressfort is not affiliated with Wordfence or Defiant Inc.
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