CVE-2026-33382
Denial of service via unbounded request body size
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.
INFO
Published Date :
July 10, 2026, 4:16 p.m.
Last Modified :
July 13, 2026, 8:51 p.m.
Remotely Exploit :
Yes !
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS | 134c704f-9b21-4f2e-91b3-4a467353bcc0 | |||||
| CVSS 3.1 | HIGH | [email protected] |
Solution
- Update Grafana to a version with request size limits.
- Configure web server or API gateway for request size limits.
- Implement input validation for request body sizes.
- Monitor system memory usage.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-33382.
| URL | Resource |
|---|---|
| https://grafana.com/security/security-advisories/cve-2026-33382 | Vendor Advisory |
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-33382 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-33382
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-33382 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-33382 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
Initial Analysis by [email protected]
Jul. 13, 2026
Action Type Old Value New Value Added CPE Configuration OR *cpe:2.3:a:grafana:grafana:*:*:*:*:-:*:*:* versions from (including) 11.6.0 up to (excluding) 11.6.15 *cpe:2.3:a:grafana:grafana:*:*:*:*:-:*:*:* versions from (including) 12.2.0 up to (excluding) 12.2.9 *cpe:2.3:a:grafana:grafana:*:*:*:*:-:*:*:* versions from (including) 12.3.0 up to (excluding) 12.3.7 *cpe:2.3:a:grafana:grafana:*:*:*:*:-:*:*:* versions from (including) 12.4.0 up to (excluding) 12.4.4 *cpe:2.3:a:grafana:grafana:*:*:*:*:-:*:*:* versions from (including) 13.0.0 up to (excluding) 13.0.2 Added Reference Type Grafana Labs: https://grafana.com/security/security-advisories/cve-2026-33382 Types: Vendor Advisory -
CVE Modified by 134c704f-9b21-4f2e-91b3-4a467353bcc0
Jul. 10, 2026
Action Type Old Value New Value Added SSVC {'id': 'CVE-2026-33382', 'role': 'CISA Coordinator', 'options': [{'exploitation': 'none'}, {'automatable': 'yes'}, {'technicalImpact': 'partial'}], 'version': '2.0.3', 'timestamp': '2026-07-10T15:59:38.846803Z'} -
New CVE Received by [email protected]
Jul. 10, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Grafana', 'product': 'Grafana OSS', 'versions': [{'status': 'affected', 'version': '11.6.0', 'versionType': 'semver', 'lessThanOrEqual': '11.6.14'}, {'status': 'affected', 'version': '12.2.0', 'versionType': 'semver', 'lessThanOrEqual': '12.2.8'}, {'status': 'affected', 'version': '12.3.0', 'versionType': 'semver', 'lessThanOrEqual': '12.3.6'}, {'status': 'affected', 'version': '12.4.0', 'versionType': 'semver', 'lessThanOrEqual': '12.4.3'}, {'status': 'affected', 'version': '13.0.0', 'versionType': 'semver', 'lessThanOrEqual': '13.0.1'}], 'defaultStatus': 'unaffected'}] Added 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. Added CVSS V3.1 AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H Added CWE CWE-400 Added Reference https://grafana.com/security/security-advisories/cve-2026-33382