CVE-2026-1698 – HTTP Host header vulnerability in WebClient and WebScheduler web apps

CVE ID : CVE-2026-1698

Published : Feb. 26, 2026, 8:16 a.m. | 53 minutes ago

Description : A HTTP Host header attack vulnerability affects WebClient and the WebScheduler web apps of PcVue in version 15.0.0 through 16.3.3 included, allowing a remote attacker to inject harmful payloads that manipulate server-side behavior.

This vulnerability only affects the endpoints /Authentication/ExternalLogin, /Authentication/AuthorizationCodeCallback and /Authentication/Logout
of the WebClient and WebScheduler web apps.

Severity: 5.3 | MEDIUM

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