CVE-2026-32694 in Juju
Summary
by MITRE • 03/18/2026
In Juju from version 3.0.0 through 3.6.18, when a secret owner grants permissions to a secret to a grantee, the secret owner relies exclusively on a predictable XID of the secret to verify ownership. This allows a malicious grantee which can request secrets to predict past secrets granted by the same secret owner to different grantees, allowing them to use the resources granted by those past secrets. Successful exploitation relies on a very specific configuration, specific data semantic, and the administrator having the need to deploy at least two different applications, one of them controlled by the attacker.
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Analysis
by VulDB Data Team • 03/24/2026
The vulnerability identified as CVE-2026-32694 affects the Juju orchestration platform version 3.0.0 through 3.6.18, presenting a significant access control flaw that undermines the security model of secret management within the system. This issue stems from a predictable XID mechanism that governs secret ownership verification, creating a scenario where unauthorized parties can exploit the system's deterministic nature to gain access to resources they should not be permitted to use. The flaw exists specifically within the secret permission granting process where the secret owner's verification mechanism relies solely on the predictable XID of the secret, bypassing proper authentication and authorization checks that should normally prevent such unauthorized access.
The technical implementation of this vulnerability operates through a deterministic XID generation system that produces predictable identifiers for secrets within the Juju environment. When a secret owner grants permissions to a grantee, the system should validate the owner's identity and the legitimacy of the grant request before proceeding. However, the current implementation fails to properly verify ownership beyond the predictable XID, allowing malicious actors to calculate or guess the XID values of previously granted secrets. This predictable pattern enables an attacker to access resources that were granted to other grantees, effectively allowing them to reuse or access those resources through the knowledge of past secret identifiers.
The operational impact of this vulnerability extends beyond simple unauthorized access to encompass potential resource exhaustion and data exposure across multiple applications within the Juju environment. The exploitation requires specific conditions including a particular configuration setup, specific data semantics, and the deployment of multiple applications where one is controlled by the attacker. This constraint means that while the vulnerability exists, its exploitation is not trivial and requires significant environmental setup. However, when successfully exploited, it allows for lateral movement within the Juju environment and potential access to sensitive resources that were intended for specific grantees only.
The security implications of this vulnerability align with CWE-284 Access Control Issues, specifically addressing improper access control mechanisms that allow unauthorized access to resources. This flaw represents a privilege escalation vulnerability that can be classified under the MITRE ATT&CK framework as T1078 Valid Accounts, where attackers leverage legitimate credentials or identifiers to gain access to resources they should not be able to access. The vulnerability also demonstrates characteristics of T1566 Impersonation, as the malicious grantee effectively impersonates legitimate users by predicting and accessing secret identifiers. Additionally, this issue falls under the broader category of T1068 Exploitation for Privilege Escalation, as the attacker can leverage the predictable XID mechanism to escalate their access privileges within the Juju environment.
Mitigation strategies for this vulnerability must address the fundamental flaw in the XID generation and verification mechanism. Organizations should implement a robust randomization or cryptographic entropy system for secret identifiers to eliminate predictability in the XID generation process. The system should require additional authentication factors beyond simple XID verification, including proper access control lists, time-based tokens, or cryptographic signatures that validate both ownership and authorization. Administrators should also consider implementing monitoring and alerting systems that can detect unusual patterns of secret access or attempts to predict XID values. Regular security audits of the Juju environment should be conducted to identify and remediate any potential exploitation attempts, while also ensuring that all systems are updated to versions that address this specific vulnerability through proper implementation of secure identifier generation mechanisms.