CVE-2026-119645 in ZenTao PMS
Summary
by MITRE • 10/30/2026
ZenTao PMS through 22.6 contains a missing authorization vulnerability in doc::ajaxGetDoc() that allows authenticated users to read documents without checkPrivDoc() access checks. Low-privilege attackers can enumerate sequential document ids to retrieve body and draft content of private documents and restricted library, product, project, or team documents.
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Analysis
by VulDB Data Team • 10/30/2026
The identified vulnerability in ZenTao Project Management Software versions through 22.6 represents a critical failure in access control mechanisms within the application's documentation module. Specifically, the flaw resides in the ajaxGetDoc() function, which is designed to retrieve document content via asynchronous JavaScript requests. The core technical deficiency is the absence of mandatory authorization checks before serving sensitive data. In a properly secured implementation, any request for private or restricted resources must verify that the requesting user possesses the necessary privileges defined by the application's security policy. However, in this instance, the function bypasses the checkPrivDoc() routine, which is responsible for validating whether the authenticated user has permission to view specific documents based on their role and assigned access rights. This architectural oversight effectively decouples data retrieval from identity verification, allowing any logged-in user to access content intended only for authorized personnel or administrators.
From an operational perspective, this vulnerability enables low-privilege attackers to perform unauthorized information disclosure with significant consequences. Because the application does not validate permissions during the document fetch operation, adversaries can exploit sequential identifier patterns commonly used in web applications to enumerate resources. By iterating through a range of document identifiers, an attacker can systematically retrieve the body and draft content of private documents as well as restricted materials associated with specific libraries, products, projects, or teams. This capability transforms what might seem like a minor configuration error into a severe data breach risk, potentially exposing proprietary business logic, confidential project plans, internal communications, or intellectual property to unauthorized parties within the organization or even externally if user credentials are compromised through other vectors such as phishing or credential stuffing attacks.
The technical classification of this flaw aligns directly with CWE-284, which describes Improper Access Control, specifically highlighting failures where access controls do not restrict actions for unauthenticated users or fail to enforce proper authorization checks for authenticated users. Furthermore, the exploitation technique mirrors tactics observed in the MITRE ATT&CK framework under T1078, Valid Accounts, as it relies on existing valid credentials to escalate privileges implicitly by bypassing intended restrictions. The ability to enumerate sequential IDs also relates to CWE-209, which involves the generation of an error message that reveals sensitive information, although here the revelation is not through an error but through successful unauthorized data retrieval via predictable resource identifiers. This combination allows attackers to map out the internal structure of the project management system and extract valuable intelligence without triggering typical security alerts associated with brute-force or injection attacks.
Mitigation strategies must address both immediate remediation and long-term architectural improvements. The most urgent action is for administrators to apply the vendor-provided patch that updates ZenTao PMS to a version later than 22.6, where this authorization check has been properly implemented in the ajaxGetDoc() function. Until patches are applied, organizations should consider restricting network access to the application if it is exposed to untrusted networks and ensuring that all user accounts adhere to the principle of least privilege. Additionally, implementing robust input validation and enforcing strict authentication checks on every endpoint that handles sensitive data is essential. Security teams should also monitor logs for unusual patterns of sequential document ID requests, which may indicate active enumeration attempts by malicious actors seeking to exploit this specific weakness before a fix can be deployed.