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CVE-2026-33382— Denial of service via unbounded request body size

Quick assessment

Affected
Grafana Grafana OSS
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 OSS是Grafana公司开源的一个可视化仪表盘。 Grafana OSS存在资源管理错误漏洞，该漏洞源于多个API端点未限制请求体大小，攻击者可发送超大有效载荷，导致过度内存分配，从而耗尽内存并造成拒绝服务。以下版本受到影响：11.6.0版本至11.6.14版本、12.2.0版本至12.2.8版本、12.3.0版本至12.3.6版本、12.4.0版本至12.4.3版本和13.0.0版本至13.0.1版本。

CVSS 7.5 · High EPSS 0.39% · P30

Affected Version Matrix 5

VendorProduct Version RangeStatus
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-2026-33382

Vulnerability Information
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Vulnerability Title
Denial of service via unbounded request body size
Source: CVE Program / CVE List V5
Vulnerability Description
Several Grafana API endpoints, some of them unauthenticated, do not limit the size of the request body before processing it. An attacker can send very large payloads that force excessive memory allocation, potentially exhausting memory and causing a denial of service.
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 OSS 资源管理错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Grafana OSS是Grafana公司开源的一个可视化仪表盘。 Grafana OSS存在资源管理错误漏洞，该漏洞源于多个API端点未限制请求体大小，攻击者可发送超大有效载荷，导致过度内存分配，从而耗尽内存并造成拒绝服务。以下版本受到影响：11.6.0版本至11.6.14版本、12.2.0版本至12.2.8版本、12.3.0版本至12.3.6版本、12.4.0版本至12.4.3版本和13.0.0版本至13.0.1版本。
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 OSS 11.6.0 ~ 11.6.14 -

II. Public POCs for CVE-2026-33382

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III. Intelligence Information for CVE-2026-33382

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Vendor Advisories for CVE-2026-33382 (1)

Same Patch Batch · Grafana · 2026-07-10 · 3 CVEs total

CVE-2026-8595 6.8 MEDIUM Stored XSS in the table panel (TableNG)
CVE-2026-8609 5.3 MEDIUM Pre-authentication denial of service via the OAuth login route

IV. Related Vulnerabilities

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

V. Comments for CVE-2026-33382

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