{"id":"EUVD-2026-23100","revision":"47c268a2fbc0419091fd8ae3d26bc1fe","records":[{"revision":"47c268a2fbc0419091fd8ae3d26bc1fe","observedAt":"2026-10-30T02:50:43.89+00:00","statement":{"source":"euvd","id":"EUVD-2026-23100","aliases":["CVE-2026-21726"],"title":"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}","description":"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.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","score":5.3,"severity":null}],"references":["https://grafana.com/security/security-advisories/cve-2026-21726"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-23100","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"Apr 15, 2026, 7:24:31 PM","dateUpdated":"Aug 27, 2026, 5:22:30 PM"},"relatedAdvisories":[{"id":"WID-SEC-W-2026-0242","title":"Grafana Loki: Schwachstelle ermöglicht Offenlegung von Informationen","vulnerabilityIds":["CVE-2026-21726"]}],"note":"EUVD source date text has no stated timezone and is retained without inventing a UTC instant. Related bulletin membership is not an alias, common cause or applicability claim. A missing vector with a zero score is treated as unrated. Complete vendor/product and underlying source evidence remains in the original JSON."},"key":"euvd:EUVD-2026-23100","identifiers":["EUVD-2026-23100","CVE-2026-21726"]},"retained":false,"historicalAffected":[]}],"coverage":[]}