CVE-2026-45808
Description
A flaw was found in OpenBao, an open source identity-based secrets management system. OpenBao's namespaces are designed for multi-tenant separation. However, a user in one tenant could revoke or renew the lease and underlying credentials of another tenant. This is possible if the other tenant intentionally leaks lease identifiers, and the attacker utilizes legacy, undocumented sys/revoke and sys/renew endpoints, bypassing access control mechanisms.
Statement
Red Hat Product Security has determined that this vulnerability does not affect any currently supported Red Hat product. This assessment may evolve based on further analysis and discovery. For more information about this vulnerability and the products it affects, please see the linked references.
Understanding the Weakness (CWE)
Access Control
Technical Impact: Bypass Protection Mechanism
Access control checks for specific user data or functionality can be bypassed.
Access Control
Technical Impact: Gain Privileges or Assume Identity
Horizontal escalation of privilege is possible (one user can view/modify information of another user).
Access Control
Technical Impact: Gain Privileges or Assume Identity
Vertical escalation of privilege is possible if the user-controlled key is actually a flag that indicates administrator status, allowing the attacker to gain administrative access.
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