CVE-2025-59036 is a medium-severity vulnerability affecting opsmill's Infrahub product, specifically versions prior to 1.3.9 and versions from 1.4.0 up to but not including 1.4.5. Infrahub serves as a centralized platform for managing data, templates, and playbooks, which are critical components in IT infrastructure automation and orchestration. The vulnerability stems from improper validation of certificate expiration (CWE-298) within the authentication logic. Specifically, API tokens that have been deleted or expired are still considered valid if they are associated with an active user account. This flaw allows an attacker possessing such a token to authenticate successfully against the API, bypassing intended access controls. The issue arises because the system fails to properly check the token's expiration or deletion status during authentication, effectively extending the token's validity beyond its intended lifecycle. This can lead to unauthorized access to sensitive infrastructure management functions. The vulnerability requires the attacker to have access to a deleted or expired token linked to an active user account, and some user interaction is needed to exploit it. The vendor has addressed this issue in versions 1.3.9 and 1.4.5. As a temporary mitigation, administrators can delete or deactivate the user account associated with a deleted API token to prevent token reuse. No known exploits are currently reported in the wild, but the presence of this flaw in critical infrastructure management software warrants prompt attention.

For European organizations, the impact of this vulnerability can be significant, especially for those relying on Infrahub for infrastructure automation and orchestration. Unauthorized API access could allow attackers to manipulate infrastructure configurations, deploy malicious templates or playbooks, or exfiltrate sensitive operational data. This compromises confidentiality, integrity, and availability of critical IT systems. Given that infrastructure automation often controls multiple downstream systems, exploitation could lead to widespread disruption or persistent unauthorized access. The medium CVSS score (5.5) reflects moderate impact and exploitability, but the potential for lateral movement and escalation within an enterprise environment elevates the risk. Organizations in sectors such as finance, energy, telecommunications, and government—where infrastructure automation is prevalent—are particularly at risk. Additionally, compliance with European data protection regulations (e.g., GDPR) could be jeopardized if unauthorized access leads to data breaches.

Beyond applying the vendor-released patches in versions 1.3.9 and 1.4.5, European organizations should implement the following specific mitigations: 1) Conduct an immediate audit of all API tokens and associated user accounts to identify and revoke any tokens that are expired or deleted but still linked to active users. 2) Enforce strict lifecycle management policies for API tokens, ensuring tokens are promptly revoked and user accounts deactivated when no longer needed. 3) Implement enhanced monitoring and alerting on API authentication events, focusing on anomalous usage patterns such as authentication with expired or deleted tokens. 4) Restrict API token permissions to the minimum necessary scope to limit potential damage from compromised tokens. 5) Consider deploying additional access controls such as IP whitelisting or multi-factor authentication for API access where supported. 6) Regularly review and update infrastructure automation workflows to detect unauthorized changes. 7) Educate administrators and developers about secure token management practices to prevent token leakage or misuse.