Add Custom Codes <= 4.80 - Authenticated (Contributor+) Remote Code Execution

2025-08-14 00:00

Ryan Novotny

Strategic Overview

Status

Patched in 5.0

Affected PluginAdd Custom Codes – Insert Header, Footer, Custom PHP Snippets, CSS, Javascript

Affected Version<= 4.80

CVSS8.8High

CVECVE-2025-30975

View all Add Custom Codes – Insert Header, Footer, Custom PHP Snippets, CSS, Javascript vulnerabilities

Vulnerability Overview

The Add Custom Codes – Insert Header, Footer, Custom PHP Snippets, CSS, Javascript plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 4.80. This makes it possible for authenticated attackers, with Contributor-level access and above, to execute code on the server.

Technical Analysis

REMEDIATION: Update to version 5.0, or a newer patched version --- IDENTIFIER: CWE-94 (Improper Control of Generation of Code ('Code Injection')) The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment.

External References

https://www.cve.org/CVERecord?id=CVE-2025-30975 https://www.wordfence.com/threat-intel/vulnerabilities/id/3dbe01a5-a6ab-42d6-a485-ec54a4a62a0f

CVSS Vector

8.8

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

Base

Attack VectorNetwork
Attack ComplexityLow
Privileges RequiredLow
User InteractionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityHigh

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