Graylog Web Interface 2.2.3 /system/nodes/ cross site scripting

Summaryinfo

A vulnerability labeled as problematic has been found in Graylog Web Interface 2.2.3. This issue affects some unknown processing of the file /system/nodes/. The manipulation results in cross site scripting. This vulnerability is reported as CVE-2026-1438. The attack can be launched remotely. No exploit exists.

Detailsinfo

A vulnerability classified as problematic has been found in Graylog Web Interface 2.2.3. Affected is an unknown part of the file /system/nodes/. The manipulation with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as 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. This is going to have an impact on integrity. CVE summarizes:

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/nodes/' endpoint.

The weakness was disclosed by Julen Garrido Estévez. The advisory is available at incibe.es. This vulnerability is traded as CVE-2026-1438 since 01/26/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1059.007 by the MITRE ATT&CK project.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at CERT Bund (WID-SEC-2026-0458). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Affected

• Open Source Graylog

Productinfo

Vendor

• Graylog

Name

• Web Interface

Version

• 2.2.3

CPE 2.3info

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CPE 2.2info

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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