CVE-2026-33382
Received Received - Intake

Memory Exhaustion in Grafana API Endpoints

Publication date: 2026-07-10

Last updated on: 2026-07-10

Assigner: Grafana Labs

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.

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Meta Information

Published
2026-07-10
Last Modified
2026-07-10
Generated
2026-07-10
AI Q&A
2026-07-10
EPSS Evaluated
N/A
NVD
CVE-2026-33382
EUVD
EUVD-2026-42920

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
grafana grafana From 11.6.15 (inc) to 13.0.2 (inc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-400 The product does not properly control the allocation and maintenance of a limited resource.

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Impact Analysis

The primary impact of this vulnerability is a denial of service (DoS) attack.

By sending oversized request bodies to vulnerable Grafana API endpoints, an attacker can cause the system to allocate excessive memory, potentially exhausting available memory resources.

This can make the Grafana service unavailable to legitimate users, disrupting monitoring and visualization capabilities.

Executive Summary

CVE-2026-33382 is a high-severity vulnerability in Grafana where several API endpoints, including some that do not require authentication, fail to limit the size of incoming request bodies before processing them.

An attacker can exploit this by sending very large payloads, which cause excessive memory allocation on the server.

This excessive memory usage can exhaust system memory and lead to a denial of service condition.

Mitigation Strategies

To mitigate this vulnerability, users are advised to upgrade Grafana to fixed versions that address the issue.

  • Upgrade to Grafana version 11.6.15 or later
  • Upgrade to Grafana version 12.2.9 or later
  • Upgrade to Grafana version 12.3.7 or later
  • Upgrade to Grafana version 12.4.4 or later
  • Upgrade to Grafana version 13.0.2 or later
Compliance Impact

The provided information does not specify any direct impact of this vulnerability on compliance with common standards and regulations such as GDPR or HIPAA.

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