CVE-2026-56619 is a reflected cross-site scripting (CWE-79) vulnerability in HCL BigFix Mobile. It arises from improper neutralization of input during web page generation, specifically insufficient validation and output encoding of user-controlled input. This allows an attacker to inject malicious scripts that execute in the context of the victim's browser when the crafted input is reflected in the web page. The vulnerability affects all versions up to and including 3.6. The CVSS 3.1 vector indicates network attack vector, low attack complexity, low privileges required, user interaction required, scope changed, and low impact on confidentiality and integrity with no impact on availability.

An attacker with low privileges can exploit this vulnerability by tricking a user into interacting with a crafted link or input, leading to execution of malicious scripts in the victim's browser context. This can result in partial disclosure or modification of information accessible to the user within the application. There is no impact on system availability. The scope is changed, meaning the vulnerability affects resources beyond the security scope of the vulnerable component.

No official patch or remediation guidance is currently available from the vendor. Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until a fix is released, users should exercise caution with untrusted input and avoid interacting with suspicious links or inputs within the affected application versions.