CVE-2026-90509 Overview
CVE-2026-90509 is a hardcoded credentials vulnerability [CWE-259] affecting dromara orion-visor versions up to 2.5.7. The flaw resides in the ExposeApiAspect.beforeExposeApi function within ExposeApiAspect.java. An unauthenticated remote attacker can exploit the hardcoded default token to bypass authentication and access exposed API endpoints. Public exploit details are available, and the project maintainers have not responded to the initial issue report at the time of disclosure.
Critical Impact
Remote attackers can bypass authentication using a hardcoded default token, gaining unauthorized access to protected API functionality without credentials.
Affected Products
- dromara orion-visor versions up to and including 2.5.7
- The vulnerable component: ExposeApiAspect.java
- The affected function: ExposeApiAspect.beforeExposeApi
Discovery Timeline
- 2026-09-13 - CVE-2026-90509 published to NVD
- 2026-09-20 - Last updated in NVD database
Technical Details for CVE-2026-90509
Vulnerability Analysis
The vulnerability exists in the ExposeApiAspect.beforeExposeApi aspect method used to gate access to exposed API endpoints in orion-visor. The implementation relies on a hardcoded default token embedded directly in ExposeApiAspect.java. Any client presenting this static token is treated as authenticated, allowing remote access over the network without valid credentials. Because the token ships with the application, it is identical across every deployment that has not been reconfigured. This turns a shared, publicly discoverable secret into a universal authentication bypass.
Root Cause
The root cause is the use of hardcoded credentials [CWE-259] within application source code. The beforeExposeApi method performs its authentication check against a compiled-in value rather than against a per-deployment secret loaded from configuration, environment, or secrets management. Credentials embedded in source code cannot be rotated without redeployment and are exposed to anyone with access to the public repository.
Attack Vector
Exploitation requires no prior authentication and no user interaction. An attacker sends an HTTP request to an exposed API endpoint of a reachable orion-visor instance and supplies the known default token in the expected header or parameter. The aspect grants access, and the attacker can invoke the exposed API surface. Details of the token and request format are described in the public CVE-apply Guide on Orion Visor.
Detection Methods for CVE-2026-90509
Indicators of Compromise
- Inbound HTTP requests to orion-visor ExposeApi endpoints containing the default token value referenced in the public advisory.
- Access to exposed API functionality from source IP addresses not associated with legitimate integration partners.
- Repeated requests to ExposeApi routes originating from scanning infrastructure or anonymized networks.
Detection Strategies
- Review application logs for successful ExposeApi invocations that lack a preceding authenticated session or user context.
- Inspect deployed builds of orion-visor at or below version 2.5.7 for the hardcoded token literal in ExposeApiAspect.java.
- Correlate WAF or reverse proxy telemetry to identify requests carrying the default token header across multiple hosts.
Monitoring Recommendations
- Alert on any HTTP request to orion-visor ExposeApi endpoints from untrusted network segments.
- Baseline expected callers of the exposed API and flag deviations in source IP, user agent, or request rate.
- Forward orion-visor access logs to a centralized analytics platform for retention and retrospective hunting.
How to Mitigate CVE-2026-90509
Immediate Actions Required
- Restrict network access to orion-visor ExposeApi endpoints so they are only reachable from trusted internal callers.
- Rotate or override the default token in configuration if the deployment permits, and audit for prior unauthorized use.
- Monitor the GitHub Repository for Orion Visor and GitHub Issue #170 for maintainer response and a fixed release.
Patch Information
At the time of publication, the dromara orion-visor project has not released a fix for CVE-2026-90509. VulDB tracking is available at the VulDB CVE-2026-90509 Entry. Operators should watch upstream commits for a change that replaces the hardcoded token in ExposeApiAspect.java with a per-deployment secret sourced from configuration.
Workarounds
- Place orion-visor behind a reverse proxy or API gateway that enforces mutual TLS or an independent authentication layer in front of ExposeApi routes.
- Apply network segmentation and firewall rules to block internet exposure of orion-visor management interfaces.
- If feasible, patch ExposeApiAspect.java locally to require a strong, per-instance token loaded from an environment variable or secrets manager, and rebuild the application.
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
