CVE-2026-1658 in Directory Services
Summary
by MITRE • 02/20/2026
User Interface (UI) Misrepresentation of Critical Information vulnerability in OpenText™ Directory Services allows Cache Poisoning.
The vulnerability could be exploited by a bad actor to inject manipulated text into the OpenText application, potentially misleading users.
This issue affects Directory Services: from 20.4.1 through 25.2.
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Analysis
by VulDB Data Team • 02/27/2026
The CVE-2026-1658 vulnerability represents a critical UI misrepresentation flaw within OpenText™ Directory Services that enables cache poisoning attacks. This vulnerability falls under the broader category of CWE-693 Protection Mechanism Failure, specifically targeting the application's user interface integrity mechanisms. The flaw manifests when the system fails to properly validate and sanitize content displayed in the user interface, creating opportunities for malicious actors to manipulate the information presented to end users. The vulnerability affects versions ranging from 20.4.1 through 25.2, indicating a prolonged exposure window that allows threat actors to potentially exploit this weakness across multiple releases.
The technical implementation of this vulnerability stems from inadequate input validation and output sanitization within the directory services application. When users interact with the system, cached content that should remain consistent and trustworthy becomes vulnerable to manipulation through cache poisoning techniques. This allows attackers to inject malicious text or misleading information into the user interface, potentially causing users to make incorrect decisions based on compromised data. The attack vector typically involves crafting specific inputs that, when processed and cached by the directory services, alter the displayed information in ways that deceive users into believing they are interacting with legitimate system responses.
From an operational perspective, this vulnerability poses significant risks to organizational security posture and user trust. The cache poisoning mechanism can be leveraged to create misleading authentication prompts, false system status messages, or manipulated directory listings that could lead to unauthorized access attempts or social engineering attacks. Users may be deceived into providing sensitive information or making security-critical decisions based on the manipulated UI elements. The impact extends beyond immediate user confusion to potential privilege escalation scenarios where attackers exploit the misrepresentation to gain deeper system access or manipulate directory services functionality.
The vulnerability aligns with several ATT&CK techniques including T1548.002 for Abuse of Cloud Infrastructure and T1071.004 for Application Layer Protocol: DNS, as attackers may utilize the compromised UI to redirect users or manipulate network communications. Organizations should implement immediate mitigations including input validation enhancements, cache invalidation procedures, and enhanced monitoring of UI content changes. Security teams must also establish robust patch management processes to ensure timely deployment of vendor updates and consider network segmentation to limit the potential impact of successful exploitation attempts. The vulnerability demonstrates the critical importance of maintaining UI integrity in enterprise directory services and highlights the need for comprehensive security testing that includes user interface validation and cache management protocols.