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        "cveId": "CVE-2026-21726",
        "assignerOrgId": "57da9224-a3e2-4646-9d0e-c4dc2e05e7da",
        "state": "PUBLISHED",
        "assignerShortName": "GRAFANA",
        "dateReserved": "2026-01-05T09:26:06.215Z",
        "datePublished": "2026-04-15T19:24:31.268Z",
        "dateUpdated": "2026-07-16T03:12:02.866Z"
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                "dateUpdated": "2026-07-16T03:12:02.866Z"
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            "datePublic": "2026-04-15T19:20:00.780Z",
            "title": "Loki Path Traversal - CVE-2021-36156 Bypass",
            "descriptions": [
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                    "lang": "en",
                    "value": "The CVE-2021-36156 fix validates the namespace parameter for path traversal sequences after a single URL decode, by double encoding, an attacker can read files at the Ruler API endpoint /loki/api/v1/rules/{namespace}\n\nThanks to Prasanth Sundararajan for reporting this vulnerability."
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                    "vendor": "Grafana",
                    "product": "Loki",
                    "defaultStatus": "unaffected",
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                            "version": "2.3.0",
                            "status": "affected",
                            "versionType": "semver",
                            "lessThan": "3.5.9"
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            "references": [
                {
                    "url": "https://grafana.com/security/security-advisories/cve-2026-21726",
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            "source": {
                "discovery": "BUG_BOUNTY"
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                                "cweId": "CWE-22",
                                "lang": "en",
                                "description": "CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')"
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                            "type": "ssvc",
                            "content": {
                                "timestamp": "2026-04-15T20:01:24.769436Z",
                                "id": "CVE-2026-21726",
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                                        "Exploitation": "none"
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                "title": "CISA ADP Vulnrichment",
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