CVE-2026-110670 in sar2html
Summary
by MITRE • 10/15/2026
A vulnerability was found in cemtan sar2html 4.0.0. The affected element is the function updateDb of the file sar2html.py of the component Archive Processing. The manipulation of the argument s2host results in sql injection. The attack can be launched remotely. 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 • 10/15/2026
The vulnerability identified in cemtan sar2html version 4.0.0 represents a critical security flaw within the Archive Processing component, specifically located in the updateDb function found in the sar2html.py file. This software is designed to process and visualize system performance data collected by tools like sysstat, but its failure to properly sanitize user-supplied input creates a significant attack surface. The core technical issue stems from improper handling of the s2host argument passed into the database interaction routine. When this parameter is processed without adequate validation or escaping mechanisms, it allows an attacker to inject malicious SQL commands directly into the backend query structure. This type of flaw is classically categorized under CWE-89, which defines Improper Neutralization of Special Elements used in an SQL Command, commonly known as SQL Injection. The absence of prepared statements or strict input filtering means that any data provided by a user can alter the logic of database queries executed by the application.
From an operational perspective, this vulnerability is particularly severe because it can be exploited remotely without requiring prior authentication on many default configurations where sar2html serves its interface publicly. An attacker located anywhere on the network or internet can craft specific HTTP requests containing malicious payloads within the s2host parameter to interact with the underlying database. The impact of such an exploitation extends far beyond simple data leakage; it encompasses unauthorized access to sensitive information stored in the system performance archives, potential modification or deletion of historical data records, and in severe cases, full compromise of the backend database server if the application runs with elevated privileges. This aligns with ATT&CK technique T1059, Command and Scripting Interpreter, as SQL injection is often used to execute commands on the host system through out-of-band interactions or by leveraging specific database features like xp_cmdshell in Microsoft SQL Server or LOAD_FILE in MySQL.
The fact that the project maintainers were notified via an issue report but have not yet responded highlights a common risk in open-source projects where security patches may be delayed indefinitely. During this window of exposure, automated scanners and malicious actors actively probe for known vulnerable versions to exploit unpatched instances. The lack of immediate mitigation from the vendor places the burden on system administrators and users to implement compensating controls immediately. These measures should include placing sar2html behind a Web Application Firewall configured with rulesets capable of detecting SQL injection patterns, restricting network access to trusted IP ranges only, or disabling the vulnerable functionality if it is not strictly required for operational workflows. Additionally, ensuring that the database user account used by sar2html operates under the principle of least privilege can significantly limit the damage an attacker could inflict even if they successfully exploit this vulnerability.