CVE-2026-65011

Graylog2 Server Missing Permission Check on Event Definition Duplicate

MEDIUM
4.3
CVSS Score
Published: July 22, 2026 at 04:13 PM UTC
Updated: October 24, 2026 at 01:10 PM UTC
1 product affected across 1 vendorGRAYLOG2 Server

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Severity
MEDIUM4.3
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

0 ≤ v ≤ 7.0.100 ≤ v ≤ 7.1.50
Vendor states this is fixed in 46a2eeba4cdbc1408ff4cbf7b466853a8acfb38d (unaffected)

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.3MEDIUMVulnCheck
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
NONE
Availability
NONE
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-862

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