CVE-2026-82028 in Magistrala
Summary
by MITRE • 09/14/2026
Magistrala before 1.0.0 contains a SQL injection vulnerability in the timescale-reader and postgres-reader HTTP API services that allows authenticated attackers to inject arbitrary SQL by supplying a malicious format query parameter that is interpolated directly into the FROM clause without parameterization or identifier quoting. Attackers with a self-registered account can substitute arbitrary subqueries to achieve cross-tenant database reads, extract pg_shadow password hashes, read and write arbitrary files, and execute arbitrary code as the postgres OS user by loading attacker-supplied shared objects, with all injected SQL executing at superuser privilege due to the default PostgreSQL role configuration.
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Analysis
by VulDB Data Team • 09/14/2026
The vulnerability identified in Magistrala versions prior to 1.0.0 represents a critical security flaw within its timescale-reader and postgres-reader HTTP API services. This issue is classified as an SQL injection, specifically categorized under CWE-89 for improper neutralization of special elements used in an SQL command. The root cause lies in the direct interpolation of user-supplied input into the FROM clause of SQL queries without any form of parameterization or identifier quoting. Unlike typical SQL injections that target WHERE clauses to filter data, this vulnerability allows attackers to manipulate the structural components of the query itself, enabling far more severe consequences than simple data exfiltration from targeted tables.
The operational impact is exacerbated by the authentication model and privilege configuration of the underlying database system. Although an attacker must possess a self-registered account to initiate the attack, the injected SQL statements are executed with superuser privileges due to the default PostgreSQL role configuration. This elevation of privilege means that any malicious payload inserted into the query operates at the highest level of access within the database environment. Consequently, authenticated attackers can bypass standard row-level security policies and tenant isolation mechanisms, effectively neutralizing multi-tenant safeguards designed to prevent cross-tenant data leakage.
The specific exploitation vector involves supplying a malicious format query parameter that is directly concatenated into the FROM clause. This allows an attacker to substitute arbitrary subqueries or table references. By doing so, attackers can perform cross-tenant database reads, accessing sensitive information belonging to other users on the same instance. Furthermore, because PostgreSQL permits loading shared objects via certain superuser functions, this vulnerability extends beyond data theft to remote code execution. Attackers can exploit this by injecting commands that load attacker-supplied shared libraries, thereby achieving arbitrary code execution as the postgres OS user. This capability allows for complete compromise of the host system running the database service.
In terms of industry standards mapping, this vulnerability aligns with MITRE ATT&CK techniques related to SQL injection and privilege escalation. The ability to read pg_shadow password hashes falls under credential access tactics, while loading shared objects corresponds to execution techniques that leverage legitimate system processes or libraries for malicious purposes. The lack of input validation on identifiers is a classic example of CWE-94, improper control of generation of code, which in this context manifests as dynamic SQL construction without sanitization.
Mitigation strategies must focus primarily on upgrading the Magistrala software to version 1.0.0 or later, where these specific flaws have been addressed by developers through proper parameterized queries and strict input validation. For environments that cannot immediately upgrade, defensive measures should include implementing a Web Application Firewall with rules specifically tuned to detect SQL injection patterns in query parameters, particularly those targeting FROM clauses. Additionally, database administrators should review PostgreSQL role configurations to ensure that application service accounts do not possess superuser privileges unless absolutely necessary, thereby limiting the blast radius of any potential exploitation even if input validation fails.