CVE-2026-14471 Overview
CVE-2026-14471 is a SQL injection vulnerability in the metrics-service retention policy management component of Amazon mcp-gateway-registry before version 1.0.13. The flaw stems from improper neutralization of special elements in a table_name value that is interpolated into SQL statements at the identifier position. An authenticated remote user can craft the table_name parameter to execute arbitrary SQL queries against the backend database. The issue is tracked under CWE-89 and addressed in release 1.0.13.
Critical Impact
An authenticated attacker can execute arbitrary SQL queries against the metrics database, compromising the confidentiality and integrity of stored data.
Affected Products
- Amazon mcp-gateway-registry versions prior to 1.0.13
- The metrics-service retention policy management component
- Deployments exposing the retention policy management interface to authenticated users
Discovery Timeline
- 2026-07-06 - CVE-2026-14471 published to NVD
- 2026-07-07 - Last updated in NVD database
Technical Details for CVE-2026-14471
Vulnerability Analysis
The vulnerability resides in the retention policy management logic of the metrics-service inside Amazon mcp-gateway-registry. The service accepts a table_name value from an authenticated caller and inserts that value directly into SQL statements as an identifier. Because SQL parameter binding cannot be used for identifiers such as table or column names, the code path relies on string interpolation. Without strict allow-list validation or identifier quoting, an attacker controls a fragment of the query text. The attacker leverages this control to append or restructure the SQL statement executed by the retention policy handler.
Successful exploitation permits arbitrary SQL execution against the metrics backend. This exposes stored metrics data, supports modification of retention records, and can enable further pivoting depending on database privileges granted to the service account.
Root Cause
The root cause is improper neutralization of special elements used in an SQL command [CWE-89]. The table_name parameter is placed in identifier position inside dynamically constructed SQL. The retention policy code lacks strict identifier validation against an allow-list of known table names and does not apply safe identifier quoting.
Attack Vector
The attack vector is network-based and requires low-privilege authentication. An attacker with valid credentials to the retention policy management endpoint submits a crafted table_name value. The payload is interpolated into the SQL statement executed by the metrics service, resulting in arbitrary query execution. No user interaction is required.
See the GitHub Security Advisory GHSA-79qc-vqfr-xx5q for technical details:
https://github.com/agentic-community/mcp-gateway-registry/security/advisories/GHSA-79qc-vqfr-xx5q
Detection Methods for CVE-2026-14471
Indicators of Compromise
- Unusual or unexpected values in table_name parameters submitted to the metrics-service retention policy endpoints, including SQL keywords, quotes, semicolons, or comment sequences.
- Database audit log entries showing unexpected SELECT, DROP, UPDATE, or UNION statements originating from the metrics service account.
- Retention policy operations targeting tables outside the documented metrics schema.
Detection Strategies
- Inspect HTTP request logs for the retention policy management API and flag table_name values that do not match the expected allow-list of metrics tables.
- Enable database query logging on the metrics backend and alert on statements containing unbalanced quotes, stacked queries, or identifiers referencing system catalogs.
- Correlate authenticated user sessions with anomalous SQL activity from the metrics-service process.
Monitoring Recommendations
- Forward mcp-gateway-registry application logs and metrics database audit logs to a centralized SIEM for correlation.
- Baseline normal retention policy operations per user and alert on deviations in frequency or target tables.
- Monitor for privilege escalation attempts against the database account used by the metrics service.
How to Mitigate CVE-2026-14471
Immediate Actions Required
- Upgrade Amazon mcp-gateway-registry to version 1.0.13 or later as directed in the AWS Security Bulletin 2026-052.
- Review authenticated user accounts with access to retention policy management and revoke unnecessary privileges.
- Audit metrics database logs for signs of prior exploitation of the table_name parameter.
Patch Information
The fix is released in GitHub Release v1.0.13. Details are documented in the GitHub Security Advisory GHSA-79qc-vqfr-xx5q. Users should upgrade to 1.0.13 or later to remediate the SQL injection in the retention policy component.
Workarounds
- Restrict network access to the metrics-service retention policy endpoints to trusted administrators only until the patch is applied.
- Constrain the database account used by the metrics service to the minimum privileges required for retention operations.
- Apply a reverse proxy or WAF rule that rejects retention policy requests whose table_name values contain characters outside [A-Za-z0-9_].
# Upgrade mcp-gateway-registry to the patched release
pip install --upgrade "mcp-gateway-registry>=1.0.13"
# Verify installed version
python -c "import mcp_gateway_registry; print(mcp_gateway_registry.__version__)"
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
