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5.3
Graylog Web Interface console allows malicious code execution
CVE-2026-1440
Summary
A security issue in Graylog version 2.2.3 can allow hackers to inject malicious code into your browser if you visit a specially crafted URL. This could potentially let them take control of your session and access your account. Update to the latest version of Graylog to fix this issue.
What to do
No fix is available yet. Check with your software vendor for updates.
Affected software
| Vendor | Product | Affected versions | Fix available |
|---|---|---|---|
| graylog | graylog | 2.2.3 | – |
Original title
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 includ...
Original 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.
nvd CVSS3.1
6.1
nvd CVSS4.0
5.3
Vulnerability type
CWE-79
Cross-site Scripting (XSS)
- https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-gray... Third Party Advisory
Published: 18 Feb 2026 · Updated: 11 Mar 2026 · First seen: 6 Mar 2026