CVE-2026-65011
MEDIUMGraylog2 Server Missing Permission Check on Event Definition Duplicate
Title source: cnaDescription
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 (6)
Core 6
Core References
Issue Tracking, Technical Description issue-tracking
technical-description
Researcher Disclosure
https://github.com/Graylog2/graylog2-server/issues/26590
Patch patch
Patch Commit
https://github.com/Graylog2/graylog2-server/commit/46a2eeba4cdbc1408ff4cbf7b466853a8acfb38d
Third Party Advisory third-party-advisory
https://www.vulncheck.com/advisories/graylog2-server-missing-permission-check-on-event-definition-duplicate
Issue Tracking issue-tracking
patch
Pull Request
https://github.com/Graylog2/graylog2-server/pull/26706
Issue Tracking issue-tracking
patch
7.0 Backport Fix
https://github.com/Graylog2/graylog2-server/pull/26718
Issue Tracking issue-tracking
patch
7.1 Backport Fix
https://github.com/Graylog2/graylog2-server/pull/26719
Scores
CVSS v3
4.3
EPSS
0.0022
EPSS Percentile
12.4%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-862
Status
published
Products (3)
Graylog2/graylog2-server
< 7.0.10
Graylog2/graylog2-server
< 7.1.5
Graylog2/graylog2-server
46a2eeba4cdbc1408ff4cbf7b466853a8acfb38d
Published
Jul 22, 2026
Tracked Since
Jul 22, 2026