CVE-2026-7022: SmythOS Authentication Bypass Vulnerability

CVE-2026-7022 Overview

A security vulnerability has been detected in SmythOS sre up to version 0.0.15. The vulnerability affects the AgentRuntime function within the file packages/core/src/subsystems/AgentManager/AgentRuntime.class.ts in the HTTP Header Handler component. Manipulation of the X-DEBUG-RUN and X-DEBUG-INJ header arguments leads to improper authentication (CWE-287). This vulnerability can be exploited remotely over the network without requiring authentication. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure but did not respond.

Critical Impact
Remote attackers can bypass authentication mechanisms by manipulating debug HTTP headers, potentially gaining unauthorized access to protected AgentRuntime functionality without valid credentials.

Affected Products

SmythOS sre version 0.0.15 and earlier
SmythOS AgentRuntime component (HTTP Header Handler)
Applications utilizing SmythOS AgentRuntime.class.ts

Discovery Timeline

2026-04-26 - CVE CVE-2026-7022 published to NVD
2026-04-29 - Last updated in NVD database

Technical Details for CVE-2026-7022

Vulnerability Analysis

This improper authentication vulnerability (CWE-287) exists in the SmythOS AgentRuntime class, specifically within the HTTP Header Handler component. The vulnerable code fails to properly validate authentication when processing requests containing the X-DEBUG-RUN or X-DEBUG-INJ HTTP headers. These debug headers appear to be intended for development or testing purposes but remain accessible in production deployments, allowing attackers to bypass normal authentication flows.

The vulnerability allows remote exploitation without any prior authentication or user interaction, making it accessible to any attacker who can reach the affected service over the network. Successful exploitation enables unauthorized access with potential impact to confidentiality, integrity, and availability of the affected system.

Root Cause

The root cause lies in improper authentication handling when debug-related HTTP headers are present in incoming requests. The AgentRuntime function in AgentRuntime.class.ts processes the X-DEBUG-RUN and X-DEBUG-INJ headers without enforcing proper authentication checks. This design flaw allows attackers to craft malicious requests that bypass the intended authentication mechanisms, effectively treating debug-flagged requests as implicitly trusted.

Attack Vector

The attack is network-based, requiring only HTTP access to the vulnerable SmythOS service. An attacker crafts HTTP requests with specially manipulated X-DEBUG-RUN or X-DEBUG-INJ headers to bypass authentication controls. The attack requires no privileges, no user interaction, and low complexity to execute.

The vulnerability mechanism involves sending HTTP requests to the SmythOS service with crafted debug headers. When the AgentRuntime HTTP Header Handler processes these headers, it fails to properly authenticate the request, allowing unauthorized access to protected functionality. For technical details and proof-of-concept information, see the GitHub PoC Repository.

Detection Methods for CVE-2026-7022

Indicators of Compromise

HTTP requests containing X-DEBUG-RUN or X-DEBUG-INJ headers from external or untrusted sources
Unusual authentication bypass events in application logs
Unexpected access to AgentRuntime functionality without corresponding valid authentication sessions
Elevated activity patterns from unauthenticated or anonymous sessions

Detection Strategies

Configure WAF rules to detect and block requests containing X-DEBUG-RUN or X-DEBUG-INJ HTTP headers from external sources
Implement network monitoring to identify HTTP traffic patterns with debug headers targeting SmythOS services
Deploy application-layer intrusion detection rules that alert on authentication bypass attempts via header manipulation

Monitoring Recommendations

Enable verbose logging for the AgentRuntime component to capture all incoming HTTP headers
Monitor for anomalous authentication patterns, particularly successful access without proper credential presentation
Set up alerting for any requests containing debug-related HTTP headers in production environments
Review access logs regularly for evidence of header-based authentication bypass attempts

How to Mitigate CVE-2026-7022

Immediate Actions Required

Upgrade SmythOS sre to a patched version beyond 0.0.15 when available
Implement network-level filtering to block requests containing X-DEBUG-RUN and X-DEBUG-INJ headers from untrusted sources
Restrict access to SmythOS services to trusted networks only using firewall rules
Review and audit current access logs for signs of exploitation

Patch Information

At the time of publication, the vendor (SmythOS) has not responded to disclosure attempts. Monitor the VulDB entry for updates on official patches. Organizations should implement the workarounds below until an official fix is released.

Workarounds

Deploy a reverse proxy or WAF rule to strip or reject requests containing X-DEBUG-RUN and X-DEBUG-INJ headers
Implement IP-based access controls to limit exposure of SmythOS services to trusted networks
Disable or remove debug functionality in production deployments if possible at the application level
Monitor for and respond to any exploitation attempts using the detection strategies above

bash

# Example: Nginx configuration to block debug headers
# Add to server or location block
if ($http_x_debug_run) {
    return 403;
}
if ($http_x_debug_inj) {
    return 403;
}