CVE-2026-1698
HTTP Host header vulnerability in WebClient and WebScheduler web apps
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.
INFO
Published Date :
Feb. 26, 2026, 8:16 a.m.
Last Modified :
Feb. 26, 2026, 8:16 a.m.
Remotely Exploit :
Yes !
Source :
87c8e6ad-f0f5-4ca8-89e2-89f26d6ed932
Affected Products
The following products are affected by CVE-2026-1698
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
No affected product recoded yet
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 4.0 | MEDIUM | 87c8e6ad-f0f5-4ca8-89e2-89f26d6ed932 | ||||
| CVSS 4.0 | MEDIUM | 87c8e6ad-f0f5-4ca8-89e2-89f26d6ed932 |
Solution
- Update PcVue to a version later than 16.3.3.
- Apply vendor patches for affected web applications.
- Monitor server-side behavior for manipulation attempts.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-1698.
| URL | Resource |
|---|---|
| https://www.pcvue.com/security/#SB2026-2 |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-1698 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-1698
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-1698 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-1698 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
New CVE Received by 87c8e6ad-f0f5-4ca8-89e2-89f26d6ed932
Feb. 26, 2026
Action Type Old Value New Value Added 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. Added CVSS V4.0 AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:U/V:X/RE:M/U:Clear Added CWE CWE-644 Added Reference https://www.pcvue.com/security/#SB2026-2