External risk intelligence

SQL Injection Vulnerability in Transliterator Plugin Versions Prior to 2.5.14

CVE advisorySeverity: CRITICAL (CVSS 9.3)

CVE-2026-39732

This vulnerability affects a WordPress plugin, which are commonly used to add functionality to public-facing websites. SQL injection vulnerabilities in such plugins typically expose the backend database to the internet via the web application's public interfaces, making it a commonly reachable attack surface in standard web deployments.

SQL Injection

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 vulnerability has been identified in the Transliterator component, specifically an unauthenticated SQL injection flaw. This issue could allow unauthorized access and manipulation of data within systems utilizing this component. The primary concern is to confirm if our environment is affected and to what extent.

Unauthenticated SQL injection allows data access.
Critical flaw in widely used web components.
Confirm relevance and exposure to affected systems.

Attack Path

How an attacker could exploit the issue

An attacker can exploit this vulnerability by sending specially crafted requests to a web application that uses a vulnerable version of the Transliterator component. Because no authentication is required, an unauthenticated attacker can directly interact with the exposed component. Successful exploitation could allow an attacker to inject malicious SQL code, potentially leading to unauthorized access or modification of the application's database.

No authentication required.
Malicious SQL code injection.
Unauthorized database access.

Live Threat

Current exploitation, exposure, and threat context

This unauthenticated SQL injection vulnerability could allow an attacker to infer information about the database structure or contents when the affected component is accessed over the network.

Database structure and content.
Exploited via network requests.
Could lead to data exposure.

Operational Fix

Recommended remediation, mitigation, and detection steps

This unauthenticated SQL injection vulnerability in Transliterator impacts applications using the affected plugin, likely managed by application owners or platform teams responsible for website functionality. The immediate first step is to identify all instances of this plugin, confirm its reachability and business criticality, and then assign ownership for remediation planning.

Application owners should lead the response.
Verify plugin reachability and business criticality.
Plan remediation during the next maintenance window.

Supplementary metadata

CVSS vector

Validate whether this threat affects your internet-facing exposure.

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Frequently asked questions

What is the Transliterator component used for?

Transliterator is a WordPress plugin designed to automate character conversion. It is commonly used on websites to transliterate text between different scripts, such as converting Serbian Cyrillic to Latin characters, helping to improve content accessibility and searchability for international audiences.

What does SQL injection mean for CVE-2026-39732?

This vulnerability is classified as CWE-89, or Improper Neutralization of Special Elements used in an SQL Command. In plain terms, it means the plugin fails to properly filter input, allowing an attacker to insert their own database commands. By doing so, they can trick the application into revealing sensitive data stored in the backend database that should remain private.

How does an attacker trigger this vulnerability?

An attacker triggers this flaw by sending specially crafted network requests directly to the web application. Because the vulnerability does not require authentication, the attacker does not need to log in or have prior access to the system. Simply visiting or interacting with the affected plugin's public interface is enough to initiate the malicious command sequence.

Is my system at risk if it uses Transliterator?

Halo Surface Signal indicates that because Transliterator is a public-facing WordPress plugin, it is often reachable from the internet. If your website is connected to the web, the vulnerability is highly relevant. Systems that are restricted to internal networks or are not accessible to the public have a lower risk profile, but public interfaces remain the primary concern.

What should I do if I am running this plugin?

Your first step is to perform an inventory of your WordPress environments to confirm exactly which sites are running version 2.5.13 or older. Once identified, document the business role of these sites and coordinate with the appropriate team to plan an update or transition to a secure version as soon as a patch becomes available.

References

patchstack.com/database/wordpress/plugin/serbian-transliteration/vul…

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.