CVE-2026-1441
MEDIUMCVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Lifecycle Timeline
2Description
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/index_sets/' endpoint.
Analysis
Graylog Web Interface 2.2.3 contains a reflected XSS vulnerability in the /system/index_sets/ endpoint where unsanitized URL parameters are echoed into HTML responses, enabling attackers to execute arbitrary JavaScript in users' browsers. An attacker can craft a malicious URL to steal session cookies, hijack user sessions, or perform unauthorized actions within the victim's Graylog interface. …
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Remediation
Within 30 days: Identify affected systems and apply vendor patches as part of regular patch cycle. Verify Content-Security-Policy and output encoding.
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External POC / Exploit Code
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