CVE-2026-65011

Description

Graylog2 Server before commit 46a2eeb contains a missing per-entity permission check in the POST /events/definitions/{definitionId}/duplicate endpoint that allows authenticated users to clone any event definition. Attackers with the low-privilege eventdefinitions:create capability can read private event definitions including detection queries, aggregation thresholds, grouping fields, schedules, and notification bindings by duplicating them.

References

https://www.vulncheck.com/advisories/graylog2-server-missing-permission-check-on-event-definition-duplicate

https://github.com/Graylog2/graylog2-server/pull/26719

https://github.com/Graylog2/graylog2-server/pull/26718

https://github.com/Graylog2/graylog2-server/pull/26706

https://github.com/Graylog2/graylog2-server/issues/26590

https://github.com/Graylog2/graylog2-server/commit/46a2eeba4cdbc1408ff4cbf7b466853a8acfb38d

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3

CVSS v4