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CVE-2026-27879— Query resampling can cause unbounded memory allocations

Quick assessment

Affected
Grafana Grafana
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是Grafana开源的一套提供可视化监控界面的开源监控工具。该工具主要用于监控和分析Graphite、InfluxDB和Prometheus等。 Grafana存在安全漏洞，该漏洞源于重采样查询可能触发内存不足崩溃，可能导致拒绝服务攻击。

CVSS 6.5 · Medium EPSS 0.42% · P34

Possible ATT&CK Techniques 1 AI

T1496 · Resource Hijacking

Affected Version Matrix 5

VendorProduct Version RangeStatus
Grafana Grafana 8.0.0< 11.6.14 affected
12.0.0< 12.1.10 affected
12.2.0< 12.2.8 affected
12.3.0< 12.3.6 affected
12.4.0< 12.4.2 affected
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I. Basic Information for CVE-2026-27879

Vulnerability Information
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Vulnerability Title
Query resampling can cause unbounded memory allocations
Source: CVE Program / CVE List V5
Vulnerability Description
A resample query can be used to trigger out-of-memory crashes in Grafana.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Grafana 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Grafana是Grafana开源的一套提供可视化监控界面的开源监控工具。该工具主要用于监控和分析Graphite、InfluxDB和Prometheus等。 Grafana存在安全漏洞，该漏洞源于重采样查询可能触发内存不足崩溃，可能导致拒绝服务攻击。
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 8.0.0 ~ 11.6.14 -

II. Public POCs for CVE-2026-27879

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III. Intelligence Information for CVE-2026-27879

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Same Patch Batch · Grafana · 2026-03-27 · 5 CVEs total

CVE-2026-27876 9.1 CRITICAL RCE on Grafana via sqlExpressions
CVE-2026-27880 7.5 HIGH OpenFeature evaluation API reads input data with no bounds
CVE-2026-27877 6.5 MEDIUM Public dashboards discloses all direct mode datasources
CVE-2026-28375 6.5 MEDIUM Grafana Testdata datasource can issue unbounded memory allocations

IV. Related Vulnerabilities

Same product: Grafana
Same vendor: Grafana

V. Comments for CVE-2026-27879

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