CVE-2026-1698
HTTP Host header vulnerability in WebClient and WebScheduler web apps
- State
- Published
- Severity
- 5.3 Medium
- Published
- Feb 26, 2026
- Updated
- Mar 26, 2026
- Reserved
- Jan 30, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 4.0 | 5.3 Medium | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:L/SI:L/SA:N/AU:Y/R:U/RE:M/U:Clear | arcinfo |
Weaknesses
- CWE-644 Improper Neutralization of HTTP Headers for Scripting Syntax
Affected Products
| Product | Versions |
|---|---|
PcVuearcinfo |
|
References
- https://www.pcvue.com/security/#SB2026-2vendor-advisory
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