CVE-2026-77091 in Cloud
Summary
by MITRE • 09/08/2026
DataCube contained a path traversal issue affecting security feature enforcement. Software customers upgrade to resolved maintenance release. Update Content Extractor and Index Store.
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Analysis
by VulDB Data Team • 09/08/2026
The vulnerability identified in DataCube represents a critical failure in input validation mechanisms, specifically manifesting as a directory or path traversal flaw that undermines the integrity of security feature enforcement. This type of defect typically arises when an application processes user-supplied file paths without adequately sanitizing special characters such as dot-dot-slash sequences. By exploiting this weakness, an attacker can manipulate internal references to access files and directories that reside outside the intended restricted scope. In the context of DataCube, this flaw allows unauthorized entities to bypass security controls designed to isolate data or restrict administrative functions, effectively neutralizing protective measures like access control lists or sandboxing mechanisms that rely on strict path boundaries for their operation.
From a technical perspective, the root cause lies in the improper handling of relative paths within the Content Extractor and Index Store components. When these modules process requests involving file locations, they fail to normalize or validate the resulting absolute path against an allowed base directory. This oversight permits the traversal up the filesystem hierarchy using standard navigation sequences. Consequently, sensitive configuration files, internal system logs, or other critical data structures that are not meant for public or unprivileged access become reachable. The exploitation of this vulnerability does not necessarily require high-level privileges initially; rather, it leverages the application's own logic to escalate influence over the underlying operating system resources, potentially leading to remote code execution if combined with other vulnerabilities in file handling routines.
The operational impact of this path traversal issue is severe due to its direct effect on security enforcement capabilities. By bypassing these controls, attackers can exfiltrate confidential information, modify critical configuration settings that dictate how DataCube operates, or inject malicious content into indexed documents which may then be propagated to other users through the search index. This compromises the confidentiality, integrity, and availability of the data managed by the system. Furthermore, because the flaw affects security feature enforcement, it erodes trust in the platform's ability to protect against further attacks, creating a foothold for more sophisticated intrusion attempts such as privilege escalation or lateral movement within the network environment where DataCube is deployed.
To mitigate this risk and restore secure operations, customers must immediately upgrade to the resolved maintenance release provided by the software vendor. This update includes patches that enforce strict path validation and canonicalization checks before any file system interaction occurs in the Content Extractor and Index Store modules. In addition to applying the patch, administrators should review current access controls and ensure that least-privilege principles are applied to service accounts running DataCube processes. It is also advisable to implement network-level segmentation to limit exposure of these components to untrusted networks. Regularly monitoring for unusual file system activity can help detect potential exploitation attempts while maintaining vigilance against similar CWE-22 path traversal vulnerabilities in other integrated systems.