CVE-2026-27880— OpenFeature evaluation API reads input data with no bounds
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I. Basic Information for CVE-2026-27880
Vulnerability Information
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Vulnerability Title
OpenFeature evaluation API reads input data with no bounds
Source: NVD (National Vulnerability Database)
Vulnerability Description
The OpenFeature feature toggle evaluation endpoint reads unbounded values into memory, which can cause out-of-memory crashes.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Grafana OpenFeature 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Grafana OpenFeature是Grafana开源的一个支持特性开关标准化接入与管理的扩展组件。 Grafana OpenFeature存在安全漏洞，该漏洞源于功能切换评估端点将无界值读入内存，可能导致内存不足崩溃。
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
II. Public POCs for CVE-2026-27880
| # | POC Description | Source Link | Shenlong Link |
|---|
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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-2026-27877 | 6.5 MEDIUM | Public dashboards discloses all direct mode datasources |
| CVE-2026-27879 | 6.5 MEDIUM | Query resampling can cause unbounded memory allocations |
| CVE-2026-28375 | 6.5 MEDIUM | Grafana Testdata datasource can issue unbounded memory allocations |
IV. Related Vulnerabilities
Same product: Grafana
- CVE-2026-27879
Query resampling can cause unbounded memory allocations - CVE-2026-28375
Grafana Testdata datasource can issue unbounded memory alloc - CVE-2026-27876
RCE on Grafana via sqlExpressions - CVE-2026-27877
Public dashboards discloses all direct mode datasources - CVE-2026-21725
Authorization Bypass via TOCTOU in Grafana Datasource Deleti
Same vendor: Grafana
- CVE-2026-21728
Tempo query limit results in unbounded memory allocation - CVE-2026-21726
Loki Path Traversal - CVE-2021-36156 Bypass - CVE-2025-41118
Sensitive COS `SecretKey` exposed in plaintext via configura - CVE-2026-21727
Grafana Correlations: Cross-Tenant Data Disclosure and Perma - CVE-2025-12141
Grafana Alerting Editors can edit destination of webhooks th
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