NitroPack <= 1.18.4 - Missing Authorization to Authenticated (Subscriber+) Limited Settings Update via nitropack_set_compression_ajax Function
Strategic Overview
- Status
- Patched in 1.18.5
- Affected Plugin
- NitroPack – Performance, Page Speed & Cache Plugin for Core Web Vitals, CDN & Image Optimization
- Affected Version
<= 1.18.4- CVSS
- 4.3Medium
- Weakness type
- CWE-862 · Missing Authorization
- CVE
CVE-2025-8778
At a glance
CVE-2025-8778 is a medium-severity Missing Authorization vulnerability in the NitroPack WordPress plugin, affecting versions <= 1.18.4. It carries a CVSS score of 4.3 (reachable over the network; low attack complexity). Exploitation requires an authenticated account at Subscriber level or above. The issue is fixed in version 1.18.5; sites on affected versions should update now. Disclosed September 2025, reported by Peter Thaleikis.
Vulnerability Overview
The NitroPack plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the nitropack_set_compression_ajax() function in all versions up to, and including, 1.18.4. This makes it possible for authenticated attackers, with Subscriber-level access and above, to update the nitropack-enableCompression option and effectively change plugin compression settings.
Technical Analysis
The vector marks this flaw as remotely reachable over the network, with low attack complexity — no special timing or configuration is needed, and no interaction from a victim user.
CWE-862: Missing Authorization
NitroPack <= 1.18.4 carries this weakness at nitropack_set_compression_ajax(), and reaching it takes an account at Subscriber level or above. A missing authorization check means a function is reachable by anyone who can reach the endpoint, because the code never asks whether the caller is allowed to perform the action.
Any user who can reach the endpoint gets to run an action reserved for higher-privileged roles, from reading protected data to changing settings or content. For NitroPack the fix is 1.18.5: builds <= 1.18.4 are affected, anything from 1.18.5 onward is not.
Remediation
Update to version 1.18.5, or a newer patched version
How does WordSec protect against this?
Because it turns on account access, WordSec's login security is the relevant layer: role-based two-factor, captcha and brute-force limits raise the cost of getting the account this needs. None of that substitutes for the fix: NitroPack 1.18.5 closes this, and updating the plugin is the step that ends it.
- Login Security
- Alerts
External References
Related records
Same weakness class
- 8.1CVE-2024-11848: NitroPack Authenticated (Subscriber+) Limited Options
CVE-2024-11848 - 6.3NitroPack <= 1.9.2 Missing Authorization via multiple AJAX functions
- 5.3CVE-2026-39669: NitroPack <= 1.19.3 Missing Authorization
CVE-2026-39669 - 4.3CVE-2024-11851: NitroPack Authenticated (Subscriber+) Arbitrary
CVE-2024-11851
Other vulnerabilities in NitroPack – Performance, Page Speed & Cache Plugin for Core Web Vitals, CDN & Image Optimization
Vulnerability data © Defiant, Inc., provided under the Wordfence Intelligence T&C