{"id":"EUVD-2026-28508","revision":"a6ad791336c94ce490765503ae955449","records":[{"revision":"a6ad791336c94ce490765503ae955449","observedAt":"2026-11-01T07:12:45.275+00:00","statement":{"source":"euvd","id":"EUVD-2026-28508","aliases":["CVE-2026-42272","GHSA-43jv-5j4x-qv67"],"title":"Heimdall is a cloud native Identity Aware Proxy and Access Control Decision service. Prior to version 0.17.14, Heimdall handles URL-encoded slashes (%2F) in a case-sensitive manner, while percent-encoding is defined to be case-insensitive. …","description":"Heimdall is a cloud native Identity Aware Proxy and Access Control Decision service. Prior to version 0.17.14, Heimdall handles URL-encoded slashes (%2F) in a case-sensitive manner, while percent-encoding is defined to be case-insensitive. As a result, the lowercase equivalent (%2f) is not recognized and therefore not processed as expected when allow_encoded_slashes is set to off (the default setting). This discrepancy can lead to differences in how request paths are interpreted by heimdall and upstream components, which may result in authorization bypass. This issue has been patched in version 0.17.14.","state":0,"publishedAt":null,"modifiedAt":null,"affected":[],"metrics":[{"system":"EUVD CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N","score":7.8,"severity":null}],"references":["https://github.com/dadrus/heimdall/security/advisories/GHSA-43jv-5j4x-qv67","https://github.com/dadrus/heimdall/pull/3207","https://github.com/dadrus/heimdall/commit/8b0de6aba23a047cfee3081df878271bb17f4351","https://github.com/dadrus/heimdall/releases/tag/v0.17.14"],"sourceUrl":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-28508","license":"ENISA EUVD · source terms and attribution apply","enrichment":{"sourceStatus":null,"weaknesses":[],"productCriteria":[],"sourceDates":{"datePublished":"May 8, 2026, 3:40:17 AM","dateUpdated":"May 8, 2026, 11:12:35 PM"},"relatedAdvisories":[],"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-2026-28508","identifiers":["EUVD-2026-28508","CVE-2026-42272","GHSA-43jv-5j4x-qv67"]},"retained":false,"historicalAffected":[]}],"coverage":[]}