CVE-2026-4733: ixray-1.6-stcop Information Disclosure Flaw

CVE-2026-4733 Overview

CVE-2026-4733 is an Exposure of Sensitive Information to an Unauthorized Actor vulnerability affecting ixray-team's ixray-1.6-stcop project. This security flaw allows unauthorized actors to access sensitive information through a network-accessible attack vector without requiring authentication or user interaction.

Critical Impact

This information disclosure vulnerability could allow attackers to gain access to sensitive data, potentially enabling further attacks or unauthorized access to protected resources.

Affected Products

• ixray-1.6-stcop versions prior to 1.3
• ixray-team ixray-1 project

Discovery Timeline

• 2026-03-24 - CVE-2026-4733 published to NVD
• 2026-03-24 - Last updated in NVD database

Technical Details for CVE-2026-4733

Vulnerability Analysis

This vulnerability falls under CWE-200 (Exposure of Sensitive Information to an Unauthorized Actor), which occurs when an application inadvertently exposes sensitive information to actors who are not explicitly authorized to have access to that information. The vulnerability is network-accessible, meaning remote attackers can potentially exploit this flaw without requiring any privileges or user interaction.

The vulnerability primarily impacts the availability of the system, as indicated by the attack characteristics. While confidentiality and integrity impacts are limited, the ease of exploitation (low attack complexity with no prerequisites) makes this a concern for deployments exposed to untrusted networks.

Root Cause

The root cause stems from improper handling of sensitive information within the ixray-1.6-stcop application. The application fails to properly restrict access to sensitive data, allowing unauthorized actors to retrieve information that should be protected. This type of vulnerability typically arises from missing or inadequate access controls, improper error handling that leaks information, or insufficient data sanitization before exposure to external interfaces.

Attack Vector

The attack vector is network-based, allowing remote exploitation. An attacker can target this vulnerability by sending specially crafted requests to the affected application. The attack requires:

• Network access to the vulnerable ixray-1.6-stcop instance
• No authentication or special privileges
• No user interaction required

The vulnerability allows information disclosure that could be leveraged for reconnaissance or as part of a broader attack chain. Technical details regarding the specific exploitation method can be found in the GitHub Pull Request that addresses this issue.

Detection Methods for CVE-2026-4733

Indicators of Compromise

• Unusual network requests to the ixray-1.6-stcop application from unauthorized sources
• Unexpected data access patterns or information retrieval attempts
• Anomalous response sizes that may indicate data exfiltration
• Log entries showing access attempts to sensitive endpoints without proper authorization

Detection Strategies

• Monitor network traffic for suspicious requests targeting ixray-1.6-stcop instances
• Implement application-level logging to capture unauthorized access attempts
• Deploy intrusion detection systems (IDS) to identify exploitation patterns
• Review access logs for patterns consistent with information enumeration

Monitoring Recommendations

• Enable comprehensive logging for all ixray-1.6-stcop instances
• Configure alerts for unusual access patterns or high-volume requests
• Implement network segmentation to limit exposure of vulnerable instances
• Regularly audit access logs for signs of reconnaissance or exploitation attempts

How to Mitigate CVE-2026-4733

Immediate Actions Required

• Upgrade ixray-1.6-stcop to version 1.3 or later immediately
• Audit systems running affected versions for signs of exploitation
• Restrict network access to ixray-1.6-stcop instances to trusted sources only
• Implement additional access controls while awaiting patch deployment

Patch Information

The ixray-team has addressed this vulnerability in version 1.3 of ixray-1.6-stcop. The fix is documented in Pull Request #259 on the project's GitHub repository. Organizations running affected versions should prioritize upgrading to the patched version.

Workarounds

• Implement network-level access controls to restrict access to trusted IP addresses only
• Deploy a web application firewall (WAF) to filter potentially malicious requests
• Consider temporarily disabling the affected functionality if upgrade is not immediately possible
• Use network segmentation to isolate vulnerable instances from untrusted networks

# Example: Restrict network access using firewall rules
# Allow only trusted IP ranges to access the application
iptables -A INPUT -p tcp --dport 80 -s 192.168.1.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 80 -j DROP