Is this vulnerability remotely exploitable over the internet?

Yes, if the GLPI inventory endpoint is exposed over a network reachable by an attacker, the issue can be exploited remotely without authentication. However, the impact is realized when a legitimate user later views the compromised inventory data.

What level of access does an attacker need to exploit this?

The attacker only needs network access to the vulnerable inventory endpoint; no GLPI credentials are required. The attacker cannot directly control GLPI but can influence what authenticated users' browsers execute when they view affected data.

What is the safest general fix pattern for this issue?

The safest pattern is to ensure that all inventory data is strictly treated as untrusted and is subject to context-aware output encoding before it is rendered. Where feasible, restrict accepted input formats and leverage templating mechanisms that encode by default instead of outputting raw HTML.

Severity:

HIGH RISK

(7.5)

Stored Cross-Site Scripting (CWE-79) in GLPI Inventory Endpoint

CVE-2026-26027

Published:

Apr 6, 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

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Remote Code Execution by Authenticated Users

May 10, 2026

Vulnerability Type

Category:

Cross-Site Scripting (XSS)

CWE:

CWE-79;CWE-116;CWE-306

Impact:

Stored Cross-Site Scripting leading to unauthorized actions in the context of affected user sessions

Severity:

HIGH RISK

(7.5)

CVSS Version:

3.1

Vulnerability Type

Category:

Cross-Site Scripting (XSS)

CWE:

CWE-79;CWE-116;CWE-306

Impact:

Stored Cross-Site Scripting leading to unauthorized actions in the context of affected user sessions

Severity:

HIGH RISK

(7.5)

CVSS Version:

3.1

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Stored Cross-Site Scripting (CWE-79) in GLPI Inventory Endpoint

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

(8.8)

PHP Code Injection via File Upload (CWE-94) in Aero CMS Admin Post Creation

HIGH RISK

HIGH

(8.8)

Code Injection (CWE-94) via Module Parameters in Evolution CMS

Vulnerability Type

Vulnerability Type

Vulnerability Type

Catch This CVE While Code Is Being Written

Ship clean & secure code faster

Ship clean & secure code faster

Ship clean & secure code faster

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