CVE-2026-65011 json
Graylog2 Server Missing Permission Check on Event Definition Duplicate
published 3mo ago modified 18d ago also EUVD-2026-47743
- cvss
- 4.3
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 32%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- graylog graylog 7.0.11, 7.1.6
- org.graylog2 graylog2-server 7.0.11, 7.1.6
- github.com/Graylog2/graylog2-server@46a2eeb commit
- github.com/Graylog2/graylog2-server#26706 pull request
- github.com/Graylog2/graylog2-server#26718 pull request
- github.com/Graylog2/graylog2-server#26719 pull request
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Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 3mo ago
Exploit prediction
0.38% chance of exploitation in the next 30 days, higher than 32% of all scored CVEs (FIRST EPSS, 2026-11-11).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 5.3 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N |
| CNA | 3.1 | 4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N |
| CNA | 4.0 | 5.3 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected products
- Graylog2 graylog2-server
Classification
- Weakness
-
- CWE-862 Missing Authorization
References
-
github.com
/Graylog2/graylog2-server/pull/26706
issue-tracking, patch
-
github.com
/Graylog2/graylog2-server/commit/46a2eeba4cdbc1408ff4cbf7b466853a8acfb38d
patch
-
github.com
/Graylog2/graylog2-server/pull/26718
issue-tracking, patch
-
github.com
/Graylog2/graylog2-server/pull/26719
issue-tracking, patch
-
github.com
/Graylog2/graylog2-server/issues/26590
issue-tracking, technical-description
-
vulncheck.com
/advisories/graylog2-server-missing-permission-check-on-event-definition-duplicate
third-party-advisory
Sources
- CVE List CVE-2026-65011
- NVD CVE-2026-65011
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.