CVE-2026-119707 in SonicJS
Summary
by MITRE • 10/30/2026
SonicJS through 3.0.0 contains a missing authorization vulnerability in the /api/:collection and /api/content write routes that only check coarse role labels. Authenticated authors or editors can use a bearer JWT or API key to create, modify, publish, or soft-delete other users' documents, bypassing document ACLs and administrator deny overrides.
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Analysis
by VulDB Data Team • 10/30/2026
The vulnerability identified in SonicJS versions through 3.0.0 represents a critical failure in access control mechanisms within the application's RESTful API endpoints. Specifically, the flaw resides in the /api/:collection and /api/content write routes, which are responsible for handling create, update, publish, and soft-delete operations on content items. The core technical issue is that these endpoints rely exclusively on coarse-grained role labels to determine authorization decisions rather than performing fine-grained checks against specific resource ownership or access control lists. This architectural oversight allows any authenticated user possessing a valid bearer JWT token or API key with the roles of author or editor to bypass intended security boundaries. In a properly secured system, these roles should be restricted from modifying content they do not own unless explicitly granted such privileges through granular permissions, but SonicJS fails to enforce this distinction at the application logic level.
From an operational perspective, this missing authorization vulnerability enables authenticated attackers with lower-level privileges to escalate their effective rights significantly. An attacker can exploit this flaw to create new documents on behalf of other users, modify existing content owned by administrators or colleagues without permission, publish sensitive information publicly against policy constraints, or soft-delete critical data belonging to others. This bypasses document Access Control Lists (ACLs) and overrides administrator-defined deny rules that are typically designed to protect high-value assets. The ability to alter or remove another user's documents undermines the integrity of the content management system, potentially leading to defacement, data loss, or the insertion of malicious content that appears legitimate due to its association with valid user accounts.
This vulnerability aligns closely with CWE-284 Improper Access Control and falls under MITRE ATT&CK technique T1078 Valid Accounts, as it involves leveraging existing credentials to perform unauthorized actions. The lack of resource-level authorization checks means the application trusts the role label provided in the authentication context without validating whether that specific user is permitted to interact with the target resource ID. This pattern is a common pitfall in web applications where developers assume that checking for a general role like editor or author is sufficient, neglecting the necessity of verifying ownership or explicit permission grants on a per-resource basis.
To mitigate this vulnerability, immediate remediation efforts should focus on implementing strict object-level authorization checks within the affected API endpoints. Developers must ensure that every write operation verifies not only the user's role but also their specific relationship to the target document, such as confirming they are the owner or have been explicitly granted edit permissions via ACLs. Additionally, administrator deny overrides and other granular permission settings should be enforced at the middleware level before any business logic is executed. Regular security audits focusing on access control patterns and automated testing for broken object-level authorization (BOLA) can help prevent similar issues in future development cycles.