CVE-2026-108753 in agnai
Summary
by MITRE • 10/11/2026
Agnaistic agnai through 1.0.555 contains a hard-coded credentials vulnerability in self-host.docker-compose.yml, which sets a fixed admin password and public JWT secret. Unauthenticated attackers can log in as admin or sign their own JWT with admin: true to impersonate users, reset passwords, and change server configuration.
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Analysis
by VulDB Data Team • 10/11/2026
The identified vulnerability within Agnaistic agnai versions through 1.0.555 represents a critical failure in credential management practices, specifically categorized under CWE-798 as the use of hard-coded credentials. This flaw is embedded directly into the self-host.docker-compose.yml configuration file, which serves as the blueprint for deploying and running the application containerized environment. The security defect manifests through two distinct but related misconfigurations: a fixed administrative password that remains constant across all installations, and a public JSON Web Token (JWT) signing secret that is also static and widely known or easily discoverable. This approach fundamentally violates the principle of least privilege and secure key management standards such as NIST SP 800-57, which mandate that cryptographic keys and authentication secrets must be unique per deployment and kept confidential to prevent unauthorized access.
The operational impact of this vulnerability is severe due to its direct consequence on system integrity and confidentiality. Because the administrative password is hard-coded, any individual with network access to the deployed instance can authenticate as the administrator without needing valid user credentials or exploiting a separate authentication bypass mechanism. Furthermore, the exposure of the JWT signing secret allows unauthenticated attackers to forge tokens that carry elevated privileges. By manipulating the token payload to include admin: true and signing it with the known public key, an attacker can impersonate any administrative user session. This capability effectively nullifies the application's access control mechanisms, granting the adversary full control over the system environment.
The exploitation of this vulnerability enables a wide range of malicious activities that compromise both data integrity and service availability. An attacker who gains admin privileges via the hard-coded password or forged JWT can reset passwords for other users, thereby locking out legitimate administrators or gaining persistent access through compromised accounts. Additionally, the ability to change server configuration allows an adversary to modify application settings, potentially disabling security logging, altering network bindings, or injecting malicious code into the execution environment. This level of control facilitates further attacks such as data exfiltration, lateral movement within connected networks, and complete system compromise, aligning with ATT&CK techniques related to Account Manipulation (T1098) and Defense Evasion through configuration changes.
To mitigate this vulnerability, immediate remediation is required by updating the Agnaistic agnai software to a version where these credentials are dynamically generated or managed via secure environment variables rather than being hard-coded in source files. Deployment configurations must ensure that administrative passwords are unique per instance and stored securely using secrets management tools such as HashiCorp Vault or Kubernetes Secrets, ensuring they are not exposed in configuration files committed to version control systems. The JWT signing secret must be replaced with a strong, randomly generated key that is kept confidential and rotated regularly according to cryptographic best practices. Additionally, organizations should implement strict access controls on their container registries and deployment pipelines to prevent the accidental exposure of sensitive configuration data, ensuring that only authorized personnel can modify critical security parameters within the infrastructure.