CVE-2026-66982 in AION
Summary
by MITRE • 11/06/2026
HCL AION is affected by a vulnerability where browser autocomplete was enabled on sensitive login form fields, allowing the browser to store and suggest previously entered values. A malicious user with access to the same browser or system could retrieve saved credentials, potentially resulting in unintended behavior or security impact under certain conditions.
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Analysis
by VulDB Data Team • 11/06/2026
The identified vulnerability within HCL AION stems from a misconfiguration of HTML form attributes on sensitive login interfaces, specifically involving the autocomplete attribute. In standard web development practices, setting this attribute to off is critical for fields containing usernames and passwords to prevent user agents from caching these values locally. When this safeguard is omitted or incorrectly configured as enabled, modern browsers interpret the input fields as safe for storage, leading them to prompt users to save credentials or automatically populate subsequent login attempts with previously entered data. This behavior fundamentally contradicts security best practices designed to protect authentication material from unauthorized access on shared or compromised systems.
From a technical perspective, this flaw represents an insecure handling of sensitive user information at the client side. The browser's native functionality for storing and suggesting form values operates independently of application-level security controls once triggered by permissive HTML attributes. Consequently, any individual with physical or logical access to the device where these credentials were saved can view them through standard browser developer tools or password managers integrated into the operating system. This exposure bypasses server-side authentication mechanisms entirely, shifting the attack surface from network-based exploits to local privilege escalation or social engineering scenarios targeting users on shared workstations.
The operational impact of this vulnerability is significant in environments where multiple users share a single computing device or browser profile. An attacker with limited access could retrieve stored usernames and passwords without needing to exploit complex software flaws or bypass encryption algorithms. The retrieved credentials can be used for unauthorized access, leading to potential data breaches, privilege escalation within the HCL AION application, or lateral movement if those credentials are reused across other systems. This scenario aligns closely with CWE-524, which categorizes this issue as exposure of sensitive information to an unauthorized actor through cache storage, and reflects techniques described in MITRE ATT&CK under credential dumping or browser data extraction methods.
To mitigate this risk, immediate remediation should focus on enforcing strict input field configurations across all authentication-related forms within the HCL AION platform. Developers must explicitly set the autocomplete attribute to off for username and password fields to disable browser caching of these sensitive values. Additionally, implementing HTTP headers such as Cache-Control with no-store directives can further prevent any residual data from being cached by intermediate proxies or local storage mechanisms. Regular security audits should include checks for proper form attribute configurations to ensure that client-side protections remain aligned with organizational security policies and industry standards for protecting authentication credentials.