CVE-2026-42129

A user with Viewer permissions can use a path traversal in the Loki data source plugin to reach administrative Loki endpoints and read sensitive backend configuration and internal service information.

CVSS v3 7.7 HIGH

7.7^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.1 / Impact : 4.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope CHANGED

References

Link	Resource
https://grafana.com/security/security-advisories/cve-2026-42129	Broken Link

Configurations

Configuration 1 (hide)

cpe:2.3:a:grafana:loki_datasource:-:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-06-22 14:17

Updated : 2026-07-10 16:16

NVD link : CVE-2026-42129

Mitre link : CVE-2026-42129

CVE.ORG link : CVE-2026-42129

JSON object : View

Products Affected

grafana

loki_datasource

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

{"id": "CVE-2026-42129", "cveTags": [], "metrics": {"ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-42129", "role": "CISA Coordinator", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "version": "2.0.3", "timestamp": "2026-06-22T15:44:32.401117Z"}}], "cvssMetricV31": [{"type": "Secondary", "source": "security@grafana.com", "cvssData": {"scope": "CHANGED", "version": "3.1", "baseScore": 7.7, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N", "integrityImpact": "NONE", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "NONE", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}, "impactScore": 4.0, "exploitabilityScore": 3.1}]}, "affected": [{"source": "security@grafana.com", "affectedData": [{"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"}]}], "published": "2026-06-22T14:17:36.340", "references": [{"url": "https://grafana.com/security/security-advisories/cve-2026-42129", "tags": ["Broken Link"], "source": "security@grafana.com"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Secondary", "source": "security@grafana.com", "description": [{"lang": "en", "value": "CWE-22"}]}, {"type": "Secondary", "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "description": [{"lang": "en", "value": "CWE-22"}]}], "descriptions": [{"lang": "en", "value": "A user with Viewer permissions can use a path traversal in the Loki data source plugin to reach administrative Loki endpoints and read sensitive backend configuration and internal service information."}], "lastModified": "2026-07-10T16:16:31.113", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:grafana:loki_datasource:-:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "AC9FBA76-8620-4AE4-85A3-AB43E19A6331"}], "operator": "OR"}]}], "sourceIdentifier": "security@grafana.com"}