External risk intelligence

Paytium Plugin Object Injection Vulnerability

CVE advisorySeverity: CRITICAL (CVSS 9.8)

CVE-2026-114196

This vulnerability affects a WordPress plugin, which functions as an extension to a web application. WordPress sites and their plugins are commonly deployed as internet-facing web services, making the application's input handling mechanisms reachable from the public internet in typical deployments.

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

This advisory concerns a critical vulnerability in the Paytium plugin for WordPress that could allow unauthorized users to inject malicious code. This could potentially lead to a complete compromise of the affected system, impacting data integrity and availability. Understanding the nature of this vulnerability is important for assessing potential risks to our digital assets.

Untrusted data can lead to code injection.
Affects widespread web applications.
Confirm relevance and assess potential exposure.

Attack Path

How an attacker could exploit the issue

An attacker could exploit this vulnerability by sending specially crafted data to the vulnerable Paytium plugin. This could occur over the network without requiring any user interaction or prior authentication, potentially leading to unauthorized code execution.

Entry condition: Public network access.
Trigger point: Sending malicious data to the plugin.
Resulting risk: Remote code execution.

Live Threat

Current exploitation, exposure, and threat context

This vulnerability could allow an attacker to inject arbitrary PHP objects into the system, potentially leading to the execution of malicious code. This could occur when the affected Paytium plugin processes untrusted data, which may happen when handling specific payment-related operations that are exposed to the network.

Sensitive system data and service integrity.
Via network processing of untrusted data.
Code execution and unauthorized access.

Operational Fix

Recommended remediation, mitigation, and detection steps

This vulnerability in the Paytium plugin requires immediate attention from the team responsible for managing the web application and its plugins. The first step is to identify all instances of the affected plugin, determine its exposure to the internet, and assess its criticality to business operations. Once identified and prioritized, accountable owners must be engaged to plan and execute remediation.

Application or Platform Owners.
Confirm plugin presence and exposure.
Plan and coordinate remediation efforts.

Supplementary metadata

CVSS vector

Validate whether this threat affects your internet-facing exposure.

Halo Threat Intelligence helps prioritize remediation with Halo Surface Signal and H/A/L/O context. Start exposure validation with a free external attack surface trial.

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Frequently asked questions

What is the Paytium plugin for WordPress?

Paytium is a specialized software extension designed for WordPress sites to handle payment-related operations. It acts as a bridge between the website and various payment gateways, allowing administrators to process transactions directly within their digital environment. Because it manages sensitive financial workflows, it must interface frequently with external data streams.

What does CWE-502 mean for CVE-2026-114196?

CWE-502, or Deserialization of Untrusted Data, refers to a weakness where an application takes complex data received from a user and reconstructs it into an object without proper checks. In the context of this vulnerability, the plugin blindly trusts incoming data, which allows an attacker to inject malicious PHP objects that the system then processes as legitimate instructions.

How can an attacker trigger this vulnerability?

An attacker triggers this by sending specially crafted, malicious input to the plugin over the network. This exploit does not require the attacker to have an account or perform any specific actions within the site's interface beforehand. It is important to note that simply visiting the site's public pages does not automatically trigger the bug; the data must be specifically formatted to interact with the vulnerable processing logic.

Is my site at risk according to Halo Surface Signal?

Halo Surface Signal indicates this vulnerability is likely relevant to you because Paytium is a WordPress plugin. Such plugins are typically deployed as internet-facing web services, meaning the input mechanisms that process external data are often directly reachable from the public internet, increasing the likelihood that an attacker could send malicious payloads to your system.

What should I do first to address this security issue?

Your initial priority is to audit your environment to confirm where the Paytium plugin is installed. Once you have an inventory, evaluate how these instances are connected to the internet to determine which are most accessible to potential attackers. After assessing this footprint, coordinate with the technical teams who manage those specific web assets to begin the process of applying necessary updates or disabling the vulnerable functionality.

References

patchstack.com/database/wordpress/plugin/paytium/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.