Unauthorized Data Modification in NitroPack Plugin for WordPress
CVE-2025-8778

4.3MEDIUM

Key Information:

Vendor

WordPress
Status
Nitropack – Caching & Speed Optimization For Core Web Vitals, Defer Css & Js, Lazy Load Images And Cdn
Vendor
CVE Published:
10 September 2025

What is CVE-2025-8778?

The NitroPack plugin for WordPress is susceptible to an unauthorized data modification vulnerability due to a lack of proper capability checks in the nitropack_set_compression_ajax() function. This flaw affects all versions up to and including 1.18.4, allowing authenticated users with Subscriber-level access or higher to alter the nitropack-enableCompression option. Consequently, this could lead to unauthorized changes in the plugin's compression settings, posing a significant risk to website performance and security.

Affected Version(s)

NitroPack – Caching & Speed Optimization for Core Web Vitals, Defer CSS & JS, Lazy load Images and CDN * <= 1.18.4

References

https://www.wordfence.com/threat-intel/vulnerabilities/id...
https://plugins.trac.wordpress.org/browser/nitropack/trun...
https://wordpress.org/plugins/nitropack/#developers

CVSS V3.1

Score:
4.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Peter Thaleikis
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CVE-2025-8778 : Unauthorized Data Modification in NitroPack Plugin for WordPress