CVE-2026-1698 HTTP Host header vulnerability in WebClient and WebScheduler web apps
Remote attackers can manipulate server-side behavior via HTTP Host header injection in PcVue web applications, potentially bypassing security controls.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2026-1698?
CVE-2026-1698 is a medium-severity vulnerability in arcinfo PcVue, published on 26 Feb 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official 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.
Weakness: CWE-644
Which versions are affected by CVE-2026-1698?
It affects 1 product.
Products include Arcinfo Pcvue.
How do I fix CVE-2026-1698?
No fix has been published for CVE-2026-1698 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-1698 being exploited?
There is no known exploitation of CVE-2026-1698 in the wild and no public exploit code.
Other vulnerabilities in arcinfo PcVue
- CVE-2020-26867 ARC Informatique PcVue Deserialization of Untrusted Data
- CVE-2026-14868 Weak encryption mechanism for User directory
- CVE-2020-26868 ARC Informatique PcVue Access to Critical Private Variable via Public Method
- CVE-2020-26869 ARC Informatique PcVue Exposure of Sensitive Information to an Unauthorized Actor
- CVE-2026-14867 Insecure password storage in User directory
Sources
Also known as GHSA-35x7-r658-wx7f.