Vulnerability-Lookup

GHSA-3W66-95M3-8JXG

Vulnerability from github – Published: 2026-06-22 18:34 – Updated: 2026-06-22 18:34

Details

The public dashboard query endpoint does not limit request body size before processing, allowing unauthenticated attackers to trigger excessive memory allocation by sending arbitrarily large JSON payloads. This can lead to denial of service through memory exhaustion. No valid dashboard access token or authentication is required to exploit this vulnerability.

Severity

7.5 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-42127"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-770"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-22T18:16:37Z",
    "severity": "HIGH"
  },
  "details": "The public dashboard query endpoint does not limit request body size before processing, allowing unauthenticated attackers to trigger excessive memory allocation by sending arbitrarily large JSON payloads. This can lead to denial of service through memory exhaustion. No valid dashboard access token or authentication is required to exploit this vulnerability.",
  "id": "GHSA-3w66-95m3-8jxg",
  "modified": "2026-06-22T18:34:17Z",
  "published": "2026-06-22T18:34:17Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-42127"
    },
    {
      "type": "WEB",
      "url": "https://grafana.com/security/security-advisories/cve-2026-42127"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-42127 (GCVE-0-2026-42127)

Vulnerability from cvelistv5 – Published: 2026-06-22 16:31 – Updated: 2026-06-22 17:28

Title

Grafana pre-auth DoS through arbitrarily large input to public dashboard query handler

Summary

Severity

7.5 (High)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-770 - Allocation of Resources Without Limits or Throttling

Assigner

GRAFANA

References

1 reference

URL	Tags
https://grafana.com/security/security-advisories/…	vendor-advisory

Impacted products

2 products

Vendor	Product	Version
Grafana	Grafana Enterprise	Affected: 0 , ≤ 11.6.14 (semver) Affected: 0 , ≤ 12.2.8 (semver) Affected: 0 , ≤ 12.3.6 (semver) Affected: 0 , ≤ 12.4.3 (semver) Affected: 0 , ≤ 13.0.1 (semver)
Grafana	Grafana OSS	Affected: 11.6.0 , ≤ 11.6.14 (semver) Affected: 12.2.0 , ≤ 12.2.8 (semver) Affected: 12.3.0 , ≤ 12.3.6 (semver) Affected: 12.4.0 , ≤ 12.4.3 (semver) Affected: 13.0.0 , ≤ 13.0.1 (semver)

Date Public

2026-05-24 15:38

Credits

Charlie Lewis

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-42127",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-22T17:28:16.184877Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-770",
                "description": "CWE-770 Allocation of Resources Without Limits or Throttling",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-06-22T17:28:35.835Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Grafana Enterprise",
          "vendor": "Grafana",
          "versions": [
            {
              "lessThanOrEqual": "11.6.14",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "12.2.8",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "12.3.6",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "12.4.3",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "13.0.1",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "unaffected",
          "product": "Grafana OSS",
          "vendor": "Grafana",
          "versions": [
            {
              "lessThanOrEqual": "11.6.14",
              "status": "affected",
              "version": "11.6.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "12.2.8",
              "status": "affected",
              "version": "12.2.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "12.3.6",
              "status": "affected",
              "version": "12.3.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "12.4.3",
              "status": "affected",
              "version": "12.4.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "13.0.1",
              "status": "affected",
              "version": "13.0.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Charlie Lewis"
        }
      ],
      "datePublic": "2026-05-24T15:38:07.115Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "The public dashboard query endpoint does not limit request body size before processing, allowing unauthenticated attackers to trigger excessive memory allocation by sending arbitrarily large JSON payloads. This can lead to denial of service through memory exhaustion. No valid dashboard access token or authentication is required to exploit this vulnerability."
        }
      ],
      "metrics": [
        {
          "cvssV3_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",
            "version": "3.1"
          }
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-22T16:31:28.096Z",
        "orgId": "57da9224-a3e2-4646-9d0e-c4dc2e05e7da",
        "shortName": "GRAFANA"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://grafana.com/security/security-advisories/cve-2026-42127"
        }
      ],
      "source": {
        "discovery": "EXTERNAL_REPORT"
      },
      "title": "Grafana pre-auth DoS through arbitrarily large input to public dashboard query handler",
      "x_generator": {
        "engine": "cvelib 1.8.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "57da9224-a3e2-4646-9d0e-c4dc2e05e7da",
    "assignerShortName": "GRAFANA",
    "cveId": "CVE-2026-42127",
    "datePublished": "2026-06-22T16:31:28.096Z",
    "dateReserved": "2026-04-24T15:38:08.066Z",
    "dateUpdated": "2026-06-22T17:28:35.835Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-3W66-95M3-8JXG

CVE-2026-42127 (GCVE-0-2026-42127)

Tags

Sightings

Nomenclature