Is this vulnerability remotely exploitable?

Yes. An attacker can exploit this issue by sending or embedding a malicious URL that includes a crafted `function` parameter, causing code execution when a victim's browser loads the page.

Does exploitation require authentication or special privileges?

It depends on where the vulnerable parameter is processed. If the affected endpoint is public, no authentication may be required to trigger XSS, although impact is greater when targeting authenticated users with meaningful privileges.

What is the safest general fix pattern?

The safest approach is to combine strict allowlisting of acceptable `function` parameter values with context-aware output encoding on every use, and to avoid mixing raw user-controlled data into HTML or script constructs.

Severity:

HIGH RISK

(8.2)

Reflected Cross-Site Scripting (CWE-79) in Key Systems Global Facilities Management Software

CVE-2026-26723

Published:

Feb 20, 2026

Status:

Analyzed

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

NDV

Recent Vulnerabilities

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

Remote Code Execution on the Router

April 6, 2026

CWE-77;CWE-78

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Remote Code Execution on Router Firmware

April 6, 2026

Vulnerability Type

Category:

Cross-Site Scripting (XSS)

CWE:

CWE-79

Impact:

Arbitrary JavaScript Execution in Victim's Browser

Severity:

HIGH RISK

(8.2)

CVSS Version:

3.1

Vulnerability Type

Category:

Cross-Site Scripting (XSS)

CWE:

CWE-79

Impact:

Arbitrary JavaScript Execution in Victim's Browser

Severity:

HIGH RISK

(8.2)

CVSS Version:

3.1

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Made with Love in San Francisco

355 Bryant St. San Francisco, CA 94107, USA

Ask AI for summary of CodeAnt

Reflected Cross-Site Scripting (CWE-79) in Key Systems Global Facilities Management Software

Summary

Affected Context

Exploit Preconditions

Why This Happens

Potential Impact

General Mitigation Guidance

How Teams Detect Issues Like This

Frequently Asked Questions

Source

Recent Vulnerabilities

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setGameSpeedCfg CGI Handler

HIGH RISK

HIGH

(7.3)

OS Command Injection (CWE-78) in Totolink A7100RU setFirewallType Handler

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

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