CVE-2026-1175: Birkir Prime Information Disclosure Flaw

CVE-2026-1175 Overview

A vulnerability has been identified in birkir prime up to version 0.4.0.beta.0 that allows information exposure through error messages. The vulnerability exists in the /graphql endpoint within the GraphQL Directive Handler component. An attacker can remotely trigger detailed error messages that may reveal sensitive information about the application's internal structure, configuration, or data.

Critical Impact

Remote attackers can extract sensitive system information through verbose error messages from the GraphQL endpoint, potentially aiding further attacks against the application.

Affected Products

• birkir prime versions up to 0.4.0.beta.0
• Applications using the affected GraphQL Directive Handler component
• Systems exposing the /graphql endpoint

Discovery Timeline

• 2026-01-19 - CVE CVE-2026-1175 published to NVD
• 2026-01-19 - Last updated in NVD database

Technical Details for CVE-2026-1175

Vulnerability Analysis

This vulnerability falls under CWE-200 (Information Exposure), where sensitive information is disclosed to actors not explicitly authorized to access it. In this case, the GraphQL Directive Handler in birkir prime fails to properly sanitize error messages before returning them to users.

When malformed or unexpected GraphQL queries are submitted to the /graphql endpoint, the application generates verbose error messages that contain internal implementation details. These error messages may expose database schema information, file paths, stack traces, or other sensitive data that could be leveraged by attackers to understand the application's architecture and identify additional attack vectors.

The vulnerability is remotely exploitable without requiring authentication, making it accessible to any attacker who can reach the GraphQL endpoint over the network.

Root Cause

The root cause of this vulnerability is improper error handling in the GraphQL Directive Handler component. The application fails to implement proper error message sanitization, allowing raw exception details and internal state information to be exposed in API responses. This is a common issue in development or debug configurations that are inadvertently deployed to production environments.

Attack Vector

The attack is conducted remotely over the network by sending specially crafted GraphQL queries to the /graphql endpoint. The attacker does not require any authentication or special privileges to exploit this vulnerability. By analyzing the verbose error responses, an attacker can gather intelligence about the application's internal workings, which can be used to plan and execute more sophisticated attacks.

The vulnerability manifests when the GraphQL Directive Handler processes malformed queries and generates detailed error responses. For technical details on the specific exploitation methodology, see the GitHub Issue Discussion where the vulnerability was reported.

Detection Methods for CVE-2026-1175

Indicators of Compromise

• Unusual volume of GraphQL queries to the /graphql endpoint containing malformed syntax
• Multiple failed GraphQL requests from the same source IP in rapid succession
• Error responses containing stack traces, file paths, or internal configuration details being returned to clients

Detection Strategies

• Monitor GraphQL endpoint access logs for patterns of intentionally malformed queries
• Implement application-level logging to detect when verbose error messages are generated
• Deploy web application firewall (WAF) rules to identify and block suspicious GraphQL query patterns
• Review application logs for repeated error conditions that expose internal system information

Monitoring Recommendations

• Enable detailed logging for the /graphql endpoint and analyze for anomalous query patterns
• Set up alerts for error rate spikes on GraphQL operations
• Monitor outbound response sizes that may indicate verbose error message disclosure
• Implement security information and event management (SIEM) rules to correlate GraphQL-related security events

How to Mitigate CVE-2026-1175

Immediate Actions Required

• Review and restrict access to the /graphql endpoint to authorized users only
• Implement generic error messages that do not expose internal implementation details
• Disable debug mode and verbose error reporting in production environments
• Consider placing the GraphQL endpoint behind authentication if not already required

Patch Information

The project maintainers were informed of this vulnerability through a GitHub Issue but have not yet responded. No official patch is currently available. Users should monitor the project repository for updates and apply patches as soon as they become available.

For additional vulnerability intelligence, refer to:

• VulDB Entry #341769
• VulDB CTI Intelligence

Workarounds

• Configure a reverse proxy or API gateway to intercept and sanitize error responses before they reach clients
• Implement custom error handling middleware that catches exceptions and returns generic error messages
• Use network-level controls to restrict access to the GraphQL endpoint from untrusted networks
• Deploy a web application firewall with rules to detect and block information disclosure patterns

# Example: Configure nginx to mask GraphQL error responses
# Add to your nginx server configuration for the GraphQL endpoint

location /graphql {
    proxy_pass http://backend_server;
    proxy_intercept_errors on;
    error_page 400 401 403 404 500 502 503 504 = @graphql_error;
}

location @graphql_error {
    default_type application/json;
    return 200 '{"errors":[{"message":"An error occurred processing your request"}]}';
}