External risk intelligence

Noisa Theme Object Injection Vulnerability

CVE advisorySeverity: CRITICAL (CVSS 9.8)

CVE-2025-60039

The vulnerability affects a WordPress theme. WordPress themes are public-facing web components by design, and deserialization flaws in these components are commonly reachable via the internet-facing web server handling the site traffic.

Deserialization

Halo Surface Signal: 4 out of 5 — likely to be public-facing.

External exposure likelihood

Horizon Alert

Summary of the vulnerability and why it matters

A critical deserialization vulnerability has been identified in the rascals Noisa theme, potentially allowing unauthorized object injection. This impacts systems using specific versions of the Noisa theme, and its critical severity warrants attention to understand its potential relevance to our environment.

Untrusted data can inject malicious code.
Critical flaws in public-facing themes matter.
Confirm if our Noisa theme is exposed.

Attack Path

How an attacker could exploit the issue

An attacker could exploit this vulnerability by sending specially crafted data over the network to the affected Noisa theme. This data, when deserialized by the application, can lead to object injection, potentially allowing the attacker to execute arbitrary code.

Requires network access.
Triggered by deserializing untrusted data.
Allows remote code execution.

Live Threat

Current exploitation, exposure, and threat context

This vulnerability could allow an unauthenticated attacker to inject malicious code into the affected system by sending specially crafted data. This could lead to the complete compromise of the system's integrity and confidentiality.

System data and service behavior are at risk.
Unauthenticated network requests could trigger the vulnerability.
Complete system compromise is a realistic consequence.

Operational Fix

Recommended remediation, mitigation, and detection steps

This vulnerability in the rascals Noisa theme impacts applications that utilize it. Ownership likely falls to the application or website owner responsible for managing the WordPress theme, with support from the infrastructure or platform team responsible for the underlying hosting environment. The immediate practical step is to identify all instances of the affected theme, confirm its exposure to untrusted input, and assess business criticality to prioritize remediation.

Application or website owners should own this.
Verify theme exposure and business criticality first.
Plan remediation, considering vendor coordination.

Supplementary metadata

CVSS vector

Validate whether this threat affects your internet-facing exposure.

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Frequently asked questions

What is the rascals Noisa theme?

Noisa is a WordPress theme created by rascals. WordPress themes serve as the visual and structural foundation for websites built on the WordPress platform. They control how content is presented to visitors and often include specialized code to manage site features. In this context, Noisa functions as a component of the web server's software stack, where it processes incoming user requests to render site pages.

How does CVE-2025-60039 result in object injection?

This vulnerability involves a weakness known as Deserialization of Untrusted Data, or CWE-502. Deserialization is the process of converting stored data back into an object the application can use. If the application blindly trusts this incoming data without validation, an attacker can supply a carefully crafted object that the software then unknowingly processes, potentially hijacking the application's logic or executing unauthorized commands.

Does any specific action trigger the Noisa vulnerability?

The vulnerability is triggered when the Noisa theme receives and deserializes malicious, untrusted data sent over the network. It does not require the attacker to have an account or perform a login, as the flaw can be reached by unauthenticated requests. It is important to note that simply having the theme installed is not the trigger; the software must actively receive and attempt to process the specifically crafted, untrusted data to initiate the injection.

How do I know if my Noisa theme installation is at risk?

According to Halo Surface Signal, this theme is a public-facing component, meaning it is designed to handle web traffic. Because the vulnerability is reachable over the network, any WordPress site using an affected version of Noisa that is accessible to the internet is considered a likely target. You should prioritize checking any site running Noisa versions 2.6.0 or earlier, as these are exposed to the public web by default.

What steps should I take if I use the Noisa theme?

Your first step is to perform an inventory of your environments to confirm if and where the Noisa theme is installed. Once identified, evaluate the criticality of the websites using this theme to understand the potential business impact. Since this is a software-level flaw, coordinate with your web administration team to verify if the theme is actively processing untrusted inputs and plan for timely updates to a secure version once available.

References

patchstack.com/database/Wordpress/Theme/noisa/vulnerability/wordpres…

Written by Nicholas Merritt

Nicholas Merritt is VP of Security Solutions at Halo Security. With more than 25 years across application security, vulnerability prioritization, and offensive security, he helps teams translate threat data into practical exposure validation and remediation focus. He authors Halo Threat Intelligence CVE advisories using Halo Surface Signal and H/A/L/O context to prioritize internet-facing risk.