CVE-2026-52476: Aiflowy SQL Injection Vulnerability

CVE-2026-52476 Overview

CVE-2026-52476 is a SQL Injection vulnerability [CWE-89] affecting aiflowy versions 2.1.2 and earlier. The flaw resides in the getPageData method within the DatacenterQuery.java file. A remote, unauthenticated attacker can inject crafted SQL statements through this method to extract sensitive information from the backend database. No user interaction or prior authentication is required to exploit the issue.

Critical Impact
Unauthenticated remote attackers can extract sensitive data from the aiflowy backend database by supplying malicious SQL through the getPageData method.

Affected Products

aiflowy versions <= 2.1.2

Discovery Timeline

2026-07-21 - CVE-2026-52476 published to NVD
2026-07-22 - Last updated in NVD database

Technical Details for CVE-2026-52476

Vulnerability Analysis

The vulnerability is a classic SQL Injection issue in the aiflowy application. The getPageData method inside DatacenterQuery.java accepts user-controllable input and concatenates it directly into an SQL query without proper parameterization or input validation. Attackers can send crafted HTTP requests containing SQL metacharacters to alter the query structure.

Once injected, the modified query executes with the privileges of the application's database user. This allows extraction of arbitrary rows from tables accessible to that account, including credentials, configuration data, and business records. The attack requires only network reachability to the aiflowy service.

The issue is mapped to CWE-89 (Improper Neutralization of Special Elements used in an SQL Command). Confidentiality is directly impacted, while integrity and availability of the database are not the primary targets of this specific flaw. Technical details and proof-of-concept material are available in the Y4y17 CVE GitHub repository.

Root Cause

The root cause is the construction of SQL queries through string concatenation in the getPageData method of DatacenterQuery.java. Parameters supplied by remote clients flow into the query text without prepared statements or allow-list validation. Any special SQL character supplied by the attacker becomes part of the executed query.

Attack Vector

An attacker sends an HTTP request to the aiflowy endpoint that routes into DatacenterQuery.getPageData. The request payload includes SQL operators such as UNION SELECT, OR 1=1, or time-based blind injection primitives. The backend executes the malformed query and returns query results, error messages, or timing differences that the attacker uses to reconstruct database contents.

See the public proof of concept for request-level detail. No sanitized exploitation code is reproduced here.

Detection Methods for CVE-2026-52476

Indicators of Compromise

HTTP requests to aiflowy endpoints backed by DatacenterQuery.getPageData containing SQL keywords such as UNION, SELECT, SLEEP, BENCHMARK, or comment sequences like -- and /*.
Database logs showing malformed queries, syntax errors, or unusually long-running SELECT statements originating from the aiflowy service account.
Spikes in 500 or 200-with-error responses from aiflowy endpoints that accept pagination or filter parameters.

Detection Strategies

Deploy web application firewall (WAF) rules that inspect query strings and JSON bodies destined for aiflowy for SQL injection signatures.
Enable database audit logging and alert on queries containing tautologies, stacked statements, or references to system tables such as information_schema.
Correlate application access logs with database query logs to identify request-to-query pairs that deviate from baseline patterns.

Monitoring Recommendations

Monitor outbound traffic from the aiflowy host for unusual data volumes that may indicate database exfiltration.
Track authentication and privileged account activity in the aiflowy database for signs of credential compromise following suspicious queries.
Retain application and database logs for a minimum of 90 days to support incident investigation.

How to Mitigate CVE-2026-52476

Immediate Actions Required

Restrict network access to aiflowy so that only trusted clients can reach the affected endpoints.
Review recent access logs and database audit logs for evidence of SQL injection attempts against getPageData.
Rotate database credentials used by aiflowy if exploitation is suspected.

Patch Information

At the time of publication, no vendor patch is referenced in the NVD entry for aiflowy versions above 2.1.2. Monitor the aiflowy project references and vendor channels for an official fixed release. Upgrade as soon as a patched version becomes available.

Workarounds

Place aiflowy behind a WAF with SQL injection signatures enabled and tuned for the application's parameter names.
Enforce least-privilege on the database account used by aiflowy so that a successful injection cannot read tables outside its functional scope.
Apply input validation at an upstream reverse proxy to reject requests containing SQL metacharacters in pagination and filter parameters.

bash

# Example WAF-style block rule (nginx) for suspicious SQL keywords in query strings
location / {
    if ($args ~* "(union.*select|select.*from|sleep\(|benchmark\(|information_schema)") {
        return 403;
    }
    proxy_pass http://aiflowy_backend;
}