CVE-2025-59036 is a medium-severity vulnerability affecting the opsmill Infrahub product, specifically versions prior to 1.3.9 and between 1.4.0 and 1.4.5. Infrahub is a centralized platform used to manage data, templates, and playbooks, often leveraged in IT automation and infrastructure management. The vulnerability arises from improper validation of certificate expiration, classified under CWE-298. The core issue is a flaw in the authentication logic where API tokens that have been deleted or expired are still considered valid if they are associated with an active user account. This means that an attacker or unauthorized user possessing such a token could authenticate successfully against the Infrahub API, potentially gaining unauthorized access to sensitive operational data or control functions. The vulnerability requires low attack complexity (AC:L), network vector (AV:N), and privileges (PR:L) with user interaction (UI:R) needed, indicating that an attacker with some level of authenticated access and a valid token could exploit this remotely. The impact affects confidentiality, integrity, and availability to a limited extent (C:L/I:L/A:L), as unauthorized access could lead to data exposure, unauthorized changes, or disruption of automation workflows. The issue has been addressed in versions 1.3.9 and 1.4.5, and a workaround involves deleting or deactivating user accounts linked to deleted API tokens to prevent token reuse. No known exploits are reported in the wild as of the publication date.

For European organizations, the impact of this vulnerability can be significant, especially for those relying on Infrahub for critical infrastructure automation and management. Unauthorized access via stale API tokens could lead to exposure of sensitive operational data, unauthorized modification of automation playbooks, or disruption of infrastructure management processes. This could result in operational downtime, data breaches, or compliance violations under regulations such as GDPR. Organizations in sectors like finance, healthcare, manufacturing, and critical infrastructure, which often use automation tools like Infrahub, may face increased risk. The medium severity rating reflects a moderate risk level, but the potential for lateral movement or privilege escalation within the environment could amplify the consequences. The requirement for some privilege and user interaction reduces the likelihood of widespread exploitation but does not eliminate risk, especially from insider threats or compromised accounts.

To mitigate this vulnerability, European organizations should promptly upgrade Infrahub to versions 1.3.9 or 1.4.5 where the issue is fixed. Until upgrades can be applied, organizations should implement the recommended workaround by identifying and deleting or deactivating user accounts associated with deleted or expired API tokens to prevent token reuse. Additionally, organizations should audit API token usage and implement strict token lifecycle management policies, including regular token expiration and revocation processes. Monitoring and alerting on unusual API authentication attempts can help detect exploitation attempts early. Enforcing multi-factor authentication (MFA) for user accounts with API token access and limiting token privileges to the minimum necessary can further reduce risk. Network segmentation and access controls should restrict Infrahub API access to trusted hosts and users only. Finally, organizations should review and update incident response plans to include scenarios involving compromised API tokens.