The NitroPack plugin for WordPress is vulnerable to unauthorized access due to a missing capability check on a function in versions up to, and including, 1.19.3. This makes it possible for unauthenticated attackers to perform an unauthorized action.
CVE-2026-39669 is a medium severity with CVSS 5.3 Vulnerability issue affecting the Plugin NitroPack – Performance, Page Speed & Cache Plugin for Core Web Vitals, CDN & Image Optimization. It affects Versions up to 1.19.3 and is fixed in 1.19.4.
CVE-2026-39669 is tracked for the Plugin NitroPack – Performance, Page Speed & Cache Plugin for Core Web Vitals, CDN & Image Optimization as medium severity with CVSS 5.3. The affected range is Versions up to 1.19.3. Update NitroPack – Performance, Page Speed & Cache Plugin for Core Web Vitals, CDN & Image Optimization to 1.19.4 or newer where that version is compatible with the site.
| Software Type | Plugin |
|---|---|
| Software Slug |
nitropack
View on wordpress.org
|
| CVE | CVE-2026-39669 |
| Patched Versions |
1.19.4
|
| Affected Versions |
Versions up to 1.19.3
|
These internal links group the same WordPress plugin by CVE, issue type, severity, and patch status so operators and search engines can connect the full vulnerability cluster.
NitroPack <= 1.17.0 - Missing Authorization to Authenticated (Subscriber+) Limited Options Update
NitroPack <= 1.16.7 - Unauthenticated Arbitrary Shortcode Execution
NitroPack <= 1.18.4 - Missing Authorization to Authenticated (Subscriber+) Limited Settings Update via nitropack_set_compression_ajax Function
NitroPack <= 1.17.0 - Missing Authorization to Authenticated (Subscriber+) Arbitrary Transient Update
NitroPack <= 1.10.2 - Cross-Site Request Forgery
NitroPack <= 1.9.2 - Missing Authorization via multiple AJAX functions
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