External risk intelligence

Teracity E-OSB SQL Injection Vulnerability

CVE advisorySeverity: CRITICAL (CVSS 9.8)

CVE-2026-18765

E-OSB is an integration or service bus platform typically deployed to facilitate communication between internal systems and external services or APIs. As an integration gateway, it is commonly positioned to handle external traffic, making the web interface and API endpoints exposed to the public internet.

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 Teracity Software Technologies Inc.'s E-OSB integration software, enabling attackers to inject malicious SQL commands. This type of vulnerability, known as SQL injection, could potentially allow unauthorized access to or manipulation of sensitive data processed by the E-OSB. The main concern is to confirm if this specific software is in use and if it is exposed to potential threats.

Attackers can inject harmful commands.
Confirms if our systems are at risk.
Understand potential data access and control.

Attack Path

How an attacker could exploit the issue

An attacker can target the E-OSB component by sending specially crafted SQL commands over the network. If the E-OSB does not properly sanitize these commands, it could allow an attacker to manipulate database queries, potentially leading to unauthorized access, modification, or deletion of sensitive data.

Unauthenticated network access required.
Malicious SQL commands sent to the component.
Complete database compromise risk.

Live Threat

Current exploitation, exposure, and threat context

This vulnerability, when exploited, could allow an attacker to inject malicious SQL commands into the E-OSB system. This may lead to unauthorized access to or modification of backend database information handled by E-OSB.

Database information could be accessed.
Malicious SQL commands could be injected.
Unauthorized data access may occur.

Operational Fix

Recommended remediation, mitigation, and detection steps

This SQL injection vulnerability in Teracity Software Technologies Inc. E-OSB requires immediate attention to identify and secure affected systems. Application owners and infrastructure teams are likely responsible for E-OSB deployments. The first step is to determine where E-OSB exists in your environment, assess its exposure to external networks, and confirm its business criticality. Following this assessment, a risk-based remediation plan, including coordination with Teracity Software Technologies Inc. if necessary, should be developed and executed during the next maintenance window.

Application owners must coordinate.
Verify E-OSB exposure and criticality.
Plan remediation based on risk.

Supplementary metadata

CVSS vector

Validate whether this threat affects your internet-facing exposure.

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Frequently asked questions

What is Teracity E-OSB and how is it used?

E-OSB by Teracity Software Technologies Inc. is an integration or service bus platform. It functions as a central hub designed to facilitate and manage communication between various internal systems and external services or APIs, acting as a gateway for data exchange.

What does SQL injection mean for CVE-2026-18765?

This vulnerability, classified as CWE-89, happens when an application fails to properly filter special characters in user input before using them in a database query. For CVE-2026-18765, it allows an attacker to supply their own malicious SQL commands, potentially tricking the system into revealing, changing, or deleting sensitive backend data.

How does an attacker trigger this vulnerability?

An attacker triggers this by sending specially crafted SQL commands over the network to the E-OSB component. It does not require any existing user account or authentication to initiate. Simply sending legitimate, well-formed traffic that does not contain malicious SQL code will not trigger the flaw.

Why should I care about this if my system is internal?

Halo Surface Signal notes that E-OSB is typically deployed as an integration gateway to bridge internal systems with the public internet. While internal-only instances face lower immediate risk, any instance positioned to handle external traffic or API requests is considered directly reachable by network-based attackers.

What steps should I take if I run E-OSB?

Begin by inventorying your environment to locate all E-OSB deployments. Determine which instances are accessible from the internet versus those on internal networks, assess their business role, and monitor for updates from Teracity Software Technologies Inc. to secure the affected versions.

References

siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-26-0962

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.