CVE-2025-8778 MEDIUM

CVE-2025-8778: NitroPack <= 1.18.4 - Missing Authorization to Authenticated (Subscriber+) Limited Settings Update via nitropack_set_compression_ajax Function

Vendor Nitropack
Product NitroPack – Performance, Page Speed & Cache Plugin for Core Web Vitals, CDN & Image Optimization
Weakness CWE-862 · Missing authorization
Published September 10, 2025
Last update April 8, 2026
View on NVD All CVEs

CVSS base score

4.3/10
Attack vector Network
Attack complexity Low
Privileges required Low
User interaction None
Confidentiality None
Integrity Low

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

What the vulnerability does

01Description

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.

Explanation of Vulnerability in Simple Terms

02Summary

NitroPack versions up to 1.18.4 lack proper authorization checks, allowing authenticated users with low privileges to modify site content or settings they should not access. The vulnerability requires a valid WordPress account but no special permissions. Site administrators should update to a version newer than 1.18.4 to prevent unauthorized changes.

What an attacker can do

03Attacker Capabilities

Modify site content or settings without proper authorization.

Potential impact on your site

04Site Impact

Unauthorized users can alter site configuration or content, potentially affecting site integrity and performance.

Conditions required to exploit

05Prerequisites

Attacker must have a low-privilege WordPress account (e.g., subscriber or contributor).

Key dates

06Disclosure timeline

September 10, 2025 CVE published
April 8, 2026 Record updated