CVE-2026-33382 - Vulnerability Details - OpenCVE

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.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable yes

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Grafana

Grafana OSS

unaffected

Version	Status	Constraints
`11.6.0`	affected	≤ 11.6.14
`12.2.0`	affected	≤ 12.2.8
`12.3.0`	affected	≤ 12.3.6
`12.4.0`	affected	≤ 12.4.3
`13.0.0`	affected	≤ 13.0.1

No data.

No data.

No data.

Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References

Link	Providers
https://grafana.com/security/security-advisories/cve-2026-33382

History

Fri, 10 Jul 2026 16:30:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Fri, 10 Jul 2026 15:45:00 +0000

Type	Values Removed	Values 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.
Title		Denial of service via unbounded request body size
Weaknesses		CWE-400
References		https://grafana.com/security/security-advisories/cve-2026-33382
Metrics		cvssV3_1 `{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}`

Projects

Sign in to view the affected projects.

MITRE

Status: PUBLISHED

Assigner: GRAFANA

Published: 2026-07-10T14:58:23.329Z

Updated: 2026-07-10T18:44:42.333Z

Reserved: 2026-03-19T07:55:06.978Z

Link: CVE-2026-33382

Vulnrichment

Updated: 2026-07-10T15:59:40.873Z

NVD

No data.

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

CWE-400

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-33382", "assignerOrgId": "57da9224-a3e2-4646-9d0e-c4dc2e05e7da", "state": "PUBLISHED", "assignerShortName": "GRAFANA", "dateReserved": "2026-03-19T07:55:06.978Z", "datePublished": "2026-07-10T14:58:23.329Z", "dateUpdated": "2026-07-10T18:44:42.333Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "57da9224-a3e2-4646-9d0e-c4dc2e05e7da", "shortName": "GRAFANA", "dateUpdated": "2026-07-10T18:44:42.333Z"}, "datePublic": "2026-06-09T00:00:00.000Z", "title": "Denial of service via unbounded request body size", "descriptions": [{"lang": "en", "value": "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."}], "affected": [{"vendor": "Grafana", "product": "Grafana OSS", "defaultStatus": "unaffected", "versions": [{"version": "11.6.0", "status": "affected", "versionType": "semver", "lessThanOrEqual": "11.6.14"}, {"version": "12.2.0", "status": "affected", "versionType": "semver", "lessThanOrEqual": "12.2.8"}, {"version": "12.3.0", "status": "affected", "versionType": "semver", "lessThanOrEqual": "12.3.6"}, {"version": "12.4.0", "status": "affected", "versionType": "semver", "lessThanOrEqual": "12.4.3"}, {"version": "13.0.0", "status": "affected", "versionType": "semver", "lessThanOrEqual": "13.0.1"}]}], "references": [{"url": "https://grafana.com/security/security-advisories/cve-2026-33382", "tags": ["vendor-advisory"]}], "metrics": [{"cvssV3_1": {"version": "3.1", "baseScore": 7.5, "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}}], "source": {"discovery": "INTERNAL_FINDING"}, "problemTypes": [{"descriptions": [{"lang": "en", "description": "CWE-400", "cweId": "CWE-400", "type": "CWE"}]}], "x_generator": {"engine": "cvelib 1.8.0"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-07-10T15:59:38.846803Z", "id": "CVE-2026-33382", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-07-10T15:59:43.742Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-33382", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "yes"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-07-10T15:59:38.846803Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-07-10T15:59:40.873Z"}}], "cna": {"title": "Denial of service via unbounded request body size", "source": {"discovery": "INTERNAL_FINDING"}, "metrics": [{"cvssV3_1": {"version": "3.1", "baseScore": 7.5, "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}}], "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"}], "datePublic": "2026-06-09T00:00:00.000Z", "references": [{"url": "https://grafana.com/security/security-advisories/cve-2026-33382", "tags": ["vendor-advisory"]}], "x_generator": {"engine": "cvelib 1.8.0"}, "descriptions": [{"lang": "en", "value": "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."}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-400", "description": "CWE-400"}]}], "providerMetadata": {"orgId": "57da9224-a3e2-4646-9d0e-c4dc2e05e7da", "shortName": "GRAFANA", "dateUpdated": "2026-07-10T18:44:42.333Z"}}}, "cveMetadata": {"cveId": "CVE-2026-33382", "state": "PUBLISHED", "dateUpdated": "2026-07-10T18:44:42.333Z", "dateReserved": "2026-03-19T07:55:06.978Z", "assignerOrgId": "57da9224-a3e2-4646-9d0e-c4dc2e05e7da", "datePublished": "2026-07-10T14:58:23.329Z", "assignerShortName": "GRAFANA"}, "dataVersion": "5.2"}