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Grafana: Pre-authentication denial of service in the public dashboard query handler

Type: advisorySource: OSV1 source record

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.

Announced Group revision 1
Original source ↗

GHSA-3w66-95m3-8jxg

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:GHSA-3w66-95m3-8jxg

github.com/grafana/grafana

Source reference: /affected/0/package/name

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

github.com/grafana/grafana

Source reference: /affected/1/package/name

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

github.com/grafana/grafana

Source reference: /affected/2/package/name

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

github.com/grafana/grafana

Source reference: /affected/3/package/name

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

github.com/grafana/grafana

Source reference: /affected/4/package/name

Affected versions
Not stated in this record
Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

github.com/grafana/grafana

Source reference: /affected/5/package/name

Affected versions
Not stated in this record
Fixed versions
1.9.2-0.20260616075434-82ef13993059

Source reference: /affected/5/ranges

Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "ranges": [
      {
        "type": "SEMVER",
        "events": [
          {
            "introduced": "2.0.0-beta1"
          }
        ]
      }
    ],
    "package": {
      "name": "github.com/grafana/grafana",
      "purl": "pkg:golang/github.com/grafana/grafana",
      "ecosystem": "Go"
    },
    "database_specific": {
      "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-3w66-95m3-8jxg/GHSA-3w66-95m3-8jxg.json",
      "last_known_affected_version_range": "< 11.6.15"
    }
  },
  {
    "ranges": [
      {
        "type": "SEMVER",
        "events": [
          {
            "introduced": "12.0.0"
          }
        ]
      }
    ],
    "package": {
      "name": "github.com/grafana/grafana",
      "purl": "pkg:golang/github.com/grafana/grafana",
      "ecosystem": "Go"
    },
    "database_specific": {
      "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-3w66-95m3-8jxg/GHSA-3w66-95m3-8jxg.json",
      "last_known_affected_version_range": "< 12.2.9"
    }
  },
  {
    "ranges": [
      {
        "type": "SEMVER",
        "events": [
          {
            "introduced": "12.3.0"
          }
        ]
      }
    ],
    "package": {
      "name": "github.com/grafana/grafana",
      "purl": "pkg:golang/github.com/grafana/grafana",
      "ecosystem": "Go"
    },
    "database_specific": {
      "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-3w66-95m3-8jxg/GHSA-3w66-95m3-8jxg.json",
      "last_known_affected_version_range": "< 12.3.7"
    }
  },
  {
    "ranges": [
      {
        "type": "SEMVER",
        "events": [
          {
            "introduced": "12.4.0"
          }
        ]
      }
    ],
    "package": {
      "name": "github.com/grafana/grafana",
      "purl": "pkg:golang/github.com/grafana/grafana",
      "ecosystem": "Go"
    },
    "database_specific": {
      "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-3w66-95m3-8jxg/GHSA-3w66-95m3-8jxg.json",
      "last_known_affected_version_range": "< 12.4.4"
    }
  },
  {
    "ranges": [
      {
        "type": "SEMVER",
        "events": [
          {
            "introduced": "13.0.0"
          }
        ]
      }
    ],
    "package": {
      "name": "github.com/grafana/grafana",
      "purl": "pkg:golang/github.com/grafana/grafana",
      "ecosystem": "Go"
    },
    "database_specific": {
      "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-3w66-95m3-8jxg/GHSA-3w66-95m3-8jxg.json",
      "last_known_affected_version_range": "< 13.0.2"
    }
  },
  {
    "ranges": [
      {
        "type": "SEMVER",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "1.9.2-0.20260616075434-82ef13993059"
          }
        ]
      }
    ],
    "package": {
      "name": "github.com/grafana/grafana",
      "purl": "pkg:golang/github.com/grafana/grafana",
      "ecosystem": "Go"
    },
    "database_specific": {
      "source": "https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-3w66-95m3-8jxg/GHSA-3w66-95m3-8jxg.json"
    }
  }
]
Related CVEs
CVE-2026-42127

Source reference: /aliases

Publisher severity

high

Source reference: /database_specific/severity

Linked CVE context

These ratings describe the referenced vulnerabilities and products. They are not a severity rating for every application using this dependency.

CVE-2026-42127 · High

grafana

Event
#23396 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement

Revision history

  1. GHSA-3w66-95m3-8jxg · Revision 1Source updated