CVE-2026-110668 in sar2html
Summary
by MITRE • 10/14/2026
A weakness has been identified in cemtan sar2html 4.0.0. Affected by this issue is the function index of the file sar2html.py. This manipulation of the argument sort causes sql injection. The attack is possible to be carried out remotely. The exploit has been made available to the public and could be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.
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Analysis
by VulDB Data Team • 10/14/2026
The vulnerability identified in cemtan sar2html version 4.0.0 represents a critical security flaw within the application's core functionality, specifically located in the index function of the sar2html.py module. This software is designed to process and visualize system performance data collected by System Activity Report (sar) tools, making it an essential component for many Linux-based infrastructure monitoring setups. The specific technical defect involves improper validation and sanitization of user-supplied input related to argument sorting mechanisms. When a remote attacker interacts with the application's interface or API endpoints that trigger this index function, they can inject malicious SQL commands directly into the backend database queries. This flaw is classified under CWE-89, which denotes Improper Neutralization of Special Elements used in an SQL Command, commonly known as SQL Injection. The root cause lies in the failure to properly escape or parameterize user inputs before their inclusion in dynamic SQL statements, allowing malicious syntax to alter the intended logic of database operations.
The operational impact of this vulnerability is severe due to its remote exploitability and the nature of the underlying flaw. Because the attack vector is remote, an adversary does not need prior access to the system or valid credentials to initiate the exploitation process, provided they can reach the network service hosting sar2html. The availability of public exploits significantly lowers the barrier for entry, enabling less sophisticated attackers to compromise the integrity and confidentiality of the underlying database. Successful exploitation could lead to unauthorized data disclosure, where sensitive information stored in the database is extracted by the attacker. Furthermore, depending on the specific SQL commands injected, an attacker might manipulate existing records or insert malicious entries into the database, potentially leading to data corruption or denial of service conditions if critical tables are affected. This aligns with several techniques described in the MITRE ATT&CK framework, particularly those related to Data Injection and Database Access via Remote Services, highlighting the risk of persistent compromise within monitoring infrastructure.
The fact that the project maintainers were notified early through an issue report but have not yet responded exacerbates the risk landscape for users relying on this software. In such scenarios where upstream patches are delayed or unavailable, organizations must implement compensating controls to mitigate the immediate threat. Network-level mitigations should be prioritized, including restricting access to the sar2html service via firewalls to only trusted IP addresses and ensuring it is not exposed directly to untrusted networks like the public internet. Additionally, deploying a Web Application Firewall can help detect and block common SQL injection patterns before they reach the vulnerable application logic. From an architectural perspective, migrating away from this unmaintained software or applying strict input validation at the proxy level are viable short-term strategies until a patched version is released by the vendor. Continuous monitoring of database logs for anomalous query patterns related to sorting parameters can also aid in early detection of exploitation attempts.