CVE-2026-1440
Received Received - Intake
Reflected XSS in Graylog 2.2.3 Console Enables Script Injection

Publication date: 2026-02-18

Last updated on: 2026-02-18

Assigner: Spanish National Cybersecurity Institute, S.A. (INCIBE)

Description
Reflected Cross-Site Scripting (XSS) vulnerability in the Graylog Web Interface console, version 2.2.3, caused by a lack of proper sanitization and escaping in HTML output. Several endpoints include segments of the URL directly in the response without applying output encoding, allowing an attacker to inject and execute arbitrary JavaScript code when a user visits a specially crafted URL. Exploitation of this vulnerability may allow script execution in the victim's browser and limited manipulation of the affected user's session context, through the  '/system/pipelines/' endpoint.
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Meta Information
Published
2026-02-18
Last Modified
2026-02-18
Generated
2026-06-16
AI Q&A
2026-02-18
EPSS Evaluated
2026-06-14
NVD
CVE-2026-1440
EUVD
EUVD-2026-8068
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
graylog graylog 2.2.3
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-79 The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
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Executive Summary

This vulnerability is a Reflected Cross-Site Scripting (XSS) issue in the Graylog Web Interface console version 2.2.3. It occurs because the application does not properly sanitize and escape HTML output. Specifically, some endpoints include parts of the URL directly in the response without encoding them, which allows an attacker to inject and execute arbitrary JavaScript code when a user visits a specially crafted URL.

The vulnerability is present in the '/system/pipelines/' endpoint, enabling script execution in the victim's browser and limited manipulation of the affected user's session context.

Impact Analysis

Exploitation of this vulnerability can lead to arbitrary JavaScript code execution in the victim's browser. This can result in unauthorized actions performed on behalf of the user, theft of session information, or manipulation of the user's session context.

Such impacts may include session hijacking, unauthorized access to sensitive information, or performing actions without the user's consent within the Graylog Web Interface.

Compliance Impact

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Detection Guidance

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