CVE-2025-4972 in Enterprise Edition
Summary
by MITRE • 07/10/2025
An issue has been discovered in GitLab EE affecting all versions from 18.0 before 18.0.4 and 18.1 before 18.1.2 that could have allowed authenticated users with invitation privileges to bypass group-level user invitation restrictions by manipulating group invitation functionality.
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Analysis
by VulDB Data Team • 07/25/2025
This vulnerability in GitLab Enterprise Edition represents a critical access control flaw that undermines the platform's security model for user management within groups. The issue affects versions prior to 18.0.4 and 18.1.2, creating a scenario where authenticated users possessing invitation privileges can circumvent intended restrictions governing group membership. The flaw specifically targets the group-level user invitation functionality, allowing malicious actors to manipulate the system's permission controls to invite users to groups where such invitations would normally be prohibited. This represents a direct violation of the principle of least privilege that forms the foundation of secure access control implementations.
The technical nature of this vulnerability stems from inadequate validation of user permissions within the group invitation workflow. When users with invitation privileges attempt to add members to groups, the system fails to properly verify whether the requesting user has the appropriate authorization level to perform such actions within the specific group context. This oversight creates a path for privilege escalation where authenticated users can bypass the intended access controls that should restrict who can invite users to particular groups. The vulnerability manifests through manipulation of the invitation process rather than through direct system exploitation, making it particularly insidious as it operates within the legitimate user workflow.
The operational impact of this vulnerability extends beyond simple unauthorized access to encompass potential data exposure and system compromise. An attacker exploiting this flaw could gain access to sensitive group resources by inviting themselves or associates to restricted groups, potentially leading to unauthorized data access, modification, or deletion. The implications are particularly severe in enterprise environments where GitLab serves as a central collaboration platform for development teams, project management, and code repositories. This vulnerability could enable malicious insiders or compromised accounts to escalate privileges and access confidential information that should remain restricted to authorized personnel only. The impact is amplified by the fact that the vulnerability affects multiple versions, creating a widespread risk across various deployment scenarios.
Organizations should immediately implement mitigations including upgrading to the patched versions 18.0.4 and 18.1.2 to address this vulnerability. The fix addresses the core issue by strengthening the permission validation logic within the group invitation system, ensuring that all user invitations are properly authenticated against the appropriate access control lists. Additionally, administrators should conduct comprehensive audits of group membership and invitation permissions to identify any potential unauthorized access that may have occurred. This vulnerability aligns with CWE-284 which describes improper access control, and maps to ATT&CK technique T1078 which covers valid accounts and privilege escalation. Regular monitoring of invitation logs and user access patterns should be implemented as part of ongoing security operations to detect potential exploitation attempts. The incident also underscores the importance of maintaining current software versions and implementing proper access control reviews as part of security governance processes.