CVE-2026-27878

{"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"}