CVE-2026-63015 in InLong
Summary
by MITRE • 08/20/2026
Uncontrolled Resource Consumption vulnerability in Apache InLong. Non-template responsible persons can view template information.
This issue affects Apache InLong: from 2.0.0 before 2.4.0.
Users are advised to upgrade to Apache InLong's 2.4.0 or cherry-pick [1] to solve it.
[1]
https://github.com/apache/inlong/pull/12093 https://github.com/apache/inlong/pull/11732
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Analysis
by VulDB Data Team • 08/20/2026
The identified vulnerability in Apache InLong represents a critical intersection of uncontrolled resource consumption and insufficient access control mechanisms within the data integration platform. Specifically, this flaw allows non-template responsible persons to view sensitive template information, which constitutes an unauthorized disclosure of configuration details that should be restricted based on role-based permissions. This issue affects versions of Apache InLong ranging from 2.0.0 up to but not including version 2.4.0. The core technical deficiency lies in the application's failure to properly enforce access control policies when handling template-related requests, leading to a situation where users without appropriate privileges can retrieve data that exposes internal system configurations or sensitive operational parameters.
From a security architecture perspective, this vulnerability aligns with CWE-755: Improper Handling of Exceptional Conditions and more critically CWE-284: Improper Access Control. The ability for unauthorized entities to view template information suggests that the API endpoints responsible for serving template data do not adequately verify the requester's identity or role before returning the payload. This lack of strict authorization checks allows attackers to enumerate sensitive configuration details, which can serve as reconnaissance material for further exploitation attempts. By exposing these templates, an attacker may gain insights into the underlying architecture, database schemas, or integration logic that Apache InLong employs to manage data streams and pipelines.
The operational impact of this vulnerability extends beyond simple information disclosure. While the primary symptom is unauthorized viewing of template details, the classification as uncontrolled resource consumption indicates potential secondary effects related to system stability. If an attacker can repeatedly request these restricted resources without proper rate limiting or validation overheads, it may lead to excessive memory usage or CPU spikes on the server side. This dual nature of the flaw means that it not only compromises confidentiality but also poses a risk to availability if exploited in a denial-of-service manner through rapid, repeated requests for sensitive template data. The exposure of internal templates can facilitate more sophisticated attacks by revealing how different components interact, potentially aiding in the identification of other weak points within the InLong cluster or connected systems.
Mitigation strategies must focus on immediate patching and rigorous access control enforcement. Users running affected versions are strongly advised to upgrade directly to Apache InLong version 2.4.0 or later, where these security flaws have been addressed. For organizations unable to perform a full upgrade immediately, cherry-picking the specific pull requests referenced in the advisory is recommended as an interim measure. These patches include code changes that enforce stricter permission checks on template retrieval endpoints and optimize resource handling to prevent excessive consumption during such operations. Additionally, implementing network-level access controls or web application firewalls can provide an additional layer of defense by restricting who can reach these specific API endpoints until the software is fully patched.
To align with industry standards for threat modeling and mitigation tracking, this vulnerability maps to MITRE ATT&CK technique T1087: Account Discovery when considering the enumeration aspect, and T1530: Data from Cloud Storage Object if the templates contain sensitive data stored externally. The failure to restrict access is a classic example of broken object level authorization (BOLA), which falls under CWE-639. Security teams should audit their InLong deployments for any signs of unauthorized template access in logs and ensure that all service accounts interacting with these endpoints have minimal necessary privileges. Regular security assessments focusing on API authentication and authorization logic are essential to prevent similar vulnerabilities from being introduced or exploited in the future, ensuring the integrity and confidentiality of data integration workflows managed by Apache InLong.