Graylog2 graylog2-server up to 6.0.13/6.1.9 Event Definition Remediation Step cross site scripting

Summaryinfo

A vulnerability was found in Graylog2 graylog2-server up to 6.0.13/6.1.9 and classified as problematic. Impacted is an unknown function. The manipulation of the argument Event Definition Remediation Step results in cross site scripting. This vulnerability is reported as CVE-2025-46827. The attack can be launched remotely. No exploit exists. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in Graylog2 graylog2-server up to 6.0.13/6.1.9. It has been classified as problematic. Affected is an unknown code. The manipulation of the argument Event Definition Remediation Step 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:

Graylog is a free and open log management platform. Prior to versions 6.0.14, 6.1.10, and 6.2.0, it is possible to obtain user session cookies by submitting an HTML form as part of an Event Definition Remediation Step field. For this attack to succeed, the attacker needs a user account with permissions to create event definitions, while the user must have permissions to view alerts. Additionally, an active Input must be present on the Graylog server that is capable of receiving form data (e.g. a HTTP input, TCP raw or syslog etc). Versions 6.0.14, 6.1.10, and 6.2.0 fix the issue. No known workarounds are available, as long as the relatively rare prerequisites are met.

The advisory is shared for download at github.com. This vulnerability is traded as CVE-2025-46827 since 04/30/2025. The exploitability is told to be easy. It is possible to launch the attack remotely. Successful exploitation requires user interaction by the victim. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1059.007.

Upgrading to version 6.0.14, 6.1.10 or 6.2.0 eliminates this vulnerability.

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Productinfo

Vendor

• Graylog2

Name

• graylog2-server

Version

• 6.0.0
• 6.0.1
• 6.0.2
• 6.0.3
• 6.0.4
• 6.0.5
• 6.0.6
• 6.0.7
• 6.0.8
• 6.0.9
• 6.0.10
• 6.0.11
• 6.0.12
• 6.0.13
• 6.1.0
• 6.1.1
• 6.1.2
• 6.1.3
• 6.1.4
• 6.1.5
• 6.1.6
• 6.1.7
• 6.1.8
• 6.1.9

Website

• Product: https://github.com/Graylog2/graylog2-server/

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