Summary
Refly contains hard-coded credential material in the JWT Token Handler, creating a risk that tokens or authentication operations rely on secrets embedded in application code.
Because the affected processing may be reachable remotely, an attacker who can trigger the handler could potentially obtain unauthorized access or forge authentication tokens, depending on deployment configuration.
Affected context
The issue affects Refly deployments up to version 1.1.0 where the JWT Token Handler uses credential material associated with apps/api/src/modules/config/app.config.ts. Risk depends on whether the embedded values are active in the deployed environment, whether the handler is remotely reachable, and what privileges authenticated sessions receive.
Exploit preconditions
- Attack surface: Remotely reachable JWT authentication or token-processing functionality
- Required access: The ability to send requests that reach the affected handler; prior authentication may not be required depending on routing
- Trigger point: Processing of attacker-influenced input by the JWT Token Handler
- Why exploitation is possible: Credential material is embedded in application configuration or code rather than supplied through a protected secret-management boundary
Why this happens
The underlying bug is the inclusion or use of credential material directly within application code or static configuration. Hard-coded values can be recovered from source, packages, images, or deployed artifacts and may then be reused by attackers.
This maps primarily to CWE-798: Use of Hard-coded Credentials and is also related to CWE-259: Use of Hard-coded Password, because authentication secrets are not sufficiently externalized, protected, or rotated independently of the application.
Potential impact
- An attacker may forge or manipulate authentication tokens
- Unauthorized access to application functions or protected data could occur
- Compromised credentials could be reused across environments if they are shared
- Attackers could impersonate users or service identities
- Downstream systems may be exposed if the token grants elevated privileges
General mitigation guidance
Mitigation generally focuses on removing credential material from source code and ensuring that authentication secrets are supplied through protected runtime mechanisms.
Common defensive patterns include:
- Using a managed secret store or protected environment injection mechanism
- Generating unique, high-entropy signing secrets outside the application repository
- Separating credentials across environments and services
- Rotating potentially exposed credentials and invalidating affected tokens
- Enforcing short token lifetimes and narrowly scoped claims
- Running the service with only the permissions required for its role
- Avoiding fallback credentials or default secrets in production configurations
How teams detect issues like this
Organizations can look for hard-coded credential risks through:
- Static analysis patterns identifying password, token, key, and secret assignments in source files
- Repository and artifact scanning for high-entropy strings and JWT signing material
- Code review checks for authentication defaults and fallback secrets
- Runtime policy enforcement requiring secrets to originate from approved secret-management systems
- Monitoring for unusual token issuance, repeated authentication failures, or use of tokens across unexpected locations
Automated security review tools can help identify likely credential literals, but findings should be validated against deployment and configuration behavior.
