« Volver al listado

CVE-2026-27878

Estado: AnalizadaMedia (6.5)—

A TraceQL query in Grafana Tempo with a large exemplars hint value can cause the Tempo instance to allocate an excessive amount of memory, resulting in an out-of-memory crash. This could allow an authenticated user to trigger a denial of service against the Tempo service.

CVSS

Probabilidad de explotación (EPSS)

EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).

Tecnologías afectadas (1)

Grafana — Tempo

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2026-27878",
  "cveTags": [],
  "metrics": {
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-27878",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-06-22T17:09:51.414285Z"
        }
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Secondary",
        "source": "security@grafana.com",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 6.5,
          "attackVector": "NETWORK",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 2.8
      }
    ]
  },
  "affected": [
    {
      "source": "security@grafana.com",
      "affectedData": [
        {
          "vendor": "Grafana",
          "product": "Enterprise Traces (GET)",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.1",
              "lessThan": "2.8.8",
              "versionType": "semver"
            }
          ],
          "defaultStatus": "unaffected"
        },
        {
          "vendor": "Grafana",
          "product": "Tempo",
          "versions": [
            {
              "status": "affected",
              "version": "2.6.0",
              "lessThan": "2.10.2",
              "versionType": "semver"
            }
          ],
          "defaultStatus": "unaffected"
        }
      ]
    }
  ],
  "published": "2026-06-19T19:16:34.897",
  "references": [
    {
      "url": "https://grafana.com/security/security-advisories/cve-2026-27878",
      "tags": [
        "Broken Link"
      ],
      "source": "security@grafana.com"
    }
  ],
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "type": "Secondary",
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "description": [
        {
          "lang": "en",
          "value": "CWE-400"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A TraceQL query in Grafana Tempo with a large exemplars hint value can cause the Tempo instance to allocate an excessive amount of memory, resulting in an out-of-memory crash. This could allow an authenticated user to trigger a denial of service against the Tempo service."
    }
  ],
  "lastModified": "2026-06-29T19:59:27.563",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:grafana:tempo:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "1A53B8B4-874B-40F7-83F6-A36965D9B2C0",
              "versionEndExcluding": "2.8.4",
              "versionStartIncluding": "2.6.0"
            },
            {
              "criteria": "cpe:2.3:a:grafana:tempo:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "4F731ED3-2882-414C-B5FE-679B76A751A4",
              "versionEndExcluding": "2.9.2",
              "versionStartIncluding": "2.9.0"
            },
            {
              "criteria": "cpe:2.3:a:grafana:tempo:*:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "A90B7E68-DFF4-449F-A145-C1ABB0184B2E",
              "versionEndExcluding": "2.10.2",
              "versionStartIncluding": "2.10.0"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "security@grafana.com"
}