CVE-2026-65011Network attack vector

Authenticated information disclosure via unchecked event duplication

Published Jul 22, 2026 · Updated Jul 22, 2026

Missing authorization in Graylog Open Server 7.0.10 and earlier and 7.1.5 and earlier allows remote authenticated users to read event definitions. The duplicate method in EventDefinitionsResource loads and clones the selected definition without checking entity-specific read permission. The eventdefinitions:create capability is sufficient to expose private detection queries, thresholds, grouping fields, schedules, and notification bindings.

CVSS severity5.3
Medium
EPSS probability0.38%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in Graylog Open Server 7.0.10 and earlier and 7.1.5 and earlier allows remote authenticated users to read event definitions. The duplicate method in EventDefinitionsResource loads and clones the selected definition without checking entity-specific read permission. The eventdefinitions:create capability is sufficient to expose private detection queries, thresholds, grouping fields, schedules, and notification bindings.

The record

CVE
CVE-2026-65011
Published
Jul 22, 2026
Updated
Jul 22, 2026
Vendor
Graylog
Product
Graylog Open Server
Classifications
CWE-862, T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 22, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 22, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=7.0.10
  2. Affected versionversion=0 <=7.1.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

Graylog · Graylog Open Serverversion=0 <=7.0.10; version=0 <=7.1.5

Published CVSS scores

4.3VulnCheckCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
5.3VulnCheckCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
T1213Data from Information Repositories

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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