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CVE-2026-42127— Pre-authentication denial of service in the public dashboard query endpoint

Quick assessment

Affected
Grafana Grafana Enterprise
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Grafana Enterprise是Grafana公司的一个数据可视化与监控分析平台。 Grafana Enterprise存在资源管理错误漏洞，该漏洞源于公共仪表板查询端点未限制请求体大小，可能导致未经身份验证的攻击者通过发送超大的JSON有效载荷触发过度内存分配，从而导致拒绝服务攻击。以下版本受到影响：Grafana Enterprise 11.6.14及之前版本、12.2.8及之前版本、12.3.6及之前版本、12.4.3及之前版本和13.0.1及之前版本；Grafana OSS 11.6.14及

CVSS 7.5 · High EPSS 0.43% · P35

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service

Affected Version Matrix 10

VendorProduct Version RangeStatus
Grafana Grafana Enterprise 11.6.0≤ 11.6.14 affected
12.2.0≤ 12.2.8 affected
12.3.0≤ 12.3.6 affected
12.4.0≤ 12.4.3 affected
13.0.0≤ 13.0.1 affected
Grafana Grafana OSS 11.6.0≤ 11.6.14 affected
12.2.0≤ 12.2.8 affected
12.3.0≤ 12.3.6 affected
12.4.0≤ 12.4.3 affected
13.0.0≤ 13.0.1 affected
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I. Basic Information for CVE-2026-42127

Vulnerability Information
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Vulnerability Title
Pre-authentication denial of service in the public dashboard query endpoint
Source: CVE Program / CVE List V5
Vulnerability Description
The public dashboard query endpoint does not limit request body size before processing, allowing unauthenticated attackers to trigger excessive memory allocation by sending arbitrarily large JSON payloads. This can lead to denial of service through memory exhaustion. No valid dashboard access token or authentication is required to exploit this vulnerability.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: CVE Program / CVE List V5
Vulnerability Title
Grafana Enterprise 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Grafana Enterprise是Grafana公司的一个数据可视化与监控分析平台。 Grafana Enterprise存在资源管理错误漏洞，该漏洞源于公共仪表板查询端点未限制请求体大小，可能导致未经身份验证的攻击者通过发送超大的JSON有效载荷触发过度内存分配，从而导致拒绝服务攻击。以下版本受到影响：Grafana Enterprise 11.6.14及之前版本、12.2.8及之前版本、12.3.6及之前版本、12.4.3及之前版本和13.0.1及之前版本；Grafana OSS 11.6.14及
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Grafana Grafana Enterprise 11.6.0 ~ 11.6.14 -
Grafana Grafana OSS 11.6.0 ~ 11.6.14 -

II. Public POCs for CVE-2026-42127

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III. Intelligence Information for CVE-2026-42127

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Other References for CVE-2026-42127 (1)

Same Patch Batch · Grafana · 2026-06-22 · 5 CVEs total

CVE-2026-28381 9.6 CRITICAL Local File Read/Write to Potential Privilege Escalation via Snowflake GET/PUT
CVE-2026-42129 7.7 HIGH Path traversal in the Loki data source plugin
CVE-2026-9029 7.3 HIGH Stored XSS in the Geomap panel tile-layer attribution
CVE-2026-10601 5.4 MEDIUM Path traversal in the Tempo and Loki data source plugins

IV. Related Vulnerabilities

Same product: Grafana Enterprise
Same vendor: Grafana
Same weakness: CWE-400

V. Comments for CVE-2026-42127

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