External risk intelligence

Le Truffe Theme PHP Object Injection Vulnerability

CVE advisorySeverity: CRITICAL (CVSS 9.8)

CVE-2026-61998

The vulnerability exists in a WordPress theme, which is a component of a web application. WordPress themes are commonly deployed as public-facing web services, making them reachable via the internet as part of the standard web application attack surface.

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 security vulnerability has been identified in the Le Truffe software, specifically related to PHP Object Injection. This type of vulnerability could allow unauthorized access and manipulation of systems if exploited. The main concern at this time is to confirm if this software is in use and, if so, to understand the potential exposure.

Unauthenticated code injection in a web application component.
Critical flaw could impact system integrity and data.
Confirm relevance and assess any potential exposure.

Attack Path

How an attacker could exploit the issue

An attacker could exploit this vulnerability by sending a specially crafted request over the internet to a website using the affected theme. This request would target a weakness in how the theme handles PHP objects, potentially allowing the attacker to execute arbitrary code. The vulnerability can lead to complete system compromise.

No authentication or user interaction needed.
Unsanitized PHP object injection.
Full system compromise.

Live Threat

Current exploitation, exposure, and threat context

This vulnerability could allow an unauthenticated attacker to inject malicious PHP objects into the system. When processed, this could lead to the execution of arbitrary code, potentially impacting the integrity and availability of the affected service.

Sensitive system data could be exposed.
Through unauthenticated network requests.
Leading to unauthorized code execution.

Operational Fix

Recommended remediation, mitigation, and detection steps

This unauthenticated PHP object injection vulnerability in Le Truffe affects web applications using this theme. Ownership likely resides with the application or platform team responsible for managing the WordPress instance. The first practical step is to identify all deployments of the affected theme, confirm their exposure and business criticality, and then coordinate remediation with the vendor or implement compensating controls to mitigate risk.

Application or platform team owns this.
Verify theme's reachability and criticality.
Plan vendor coordination or mitigation.

Supplementary metadata

CVSS vector

Validate whether this threat affects your internet-facing exposure.

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Frequently asked questions

What is the Le Truffe software?

Le Truffe is a WordPress theme. WordPress themes control the visual presentation and layout of a website, serving as an essential layer that interacts with site visitors. Because themes often include custom PHP code to manage dynamic content, they become part of the web application's codebase.

What does PHP Object Injection mean in CVE-2026-61998?

This vulnerability is classified as CWE-502, which occurs when an application takes untrusted, user-supplied data and uses it to create or deserialize an object. If the application does not properly validate this input, an attacker can inject malicious objects into the system, potentially altering how the application functions or executing unauthorized code.

How does an attacker trigger this vulnerability?

An attacker exploits this by sending a specially crafted request over the network to a site running the affected theme. No authentication or prior user interaction is required for this to succeed. Importantly, the vulnerability is triggered by the processing of the malicious input itself, rather than by simply visiting the website normally.

Is my site at risk if it uses Le Truffe?

According to Halo Surface Signal, this theme is commonly used in public-facing web services, which increases the likelihood of exposure to internet-based threats. If your WordPress instance is reachable from the internet, the component is theoretically accessible to external actors who could attempt to send the malicious requests described in this vulnerability.

When should I take action for CVE-2026-61998?

You should begin by auditing your environments to confirm if the Le Truffe theme is installed. Once you have identified all instances, determine the business criticality of those sites. Prioritize these systems for updates or remediation efforts by coordinating with your platform team or the theme developer to address the underlying PHP handling flaw.

References

patchstack.com/database/wordpress/theme/letruffe/vulnerability/wordp…

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.