{"id":"CVE-2026-42272","revision":"530b46c3e64649cd8934dd197cd489fe","records":[{"revision":"530b46c3e64649cd8934dd197cd489fe","observedAt":"2026-10-25T10:17:10.603+00:00","statement":{"source":"nvd","id":"CVE-2026-42272","aliases":[],"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":"2026-05-08T04:16:22.013+00:00","modifiedAt":"2026-06-17T10:47:36.68+00:00","affected":[],"metrics":[{"system":"CVSS 4.0 · security-advisories@github.com · Secondary","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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","score":7.8,"severity":"HIGH"}],"references":["https://github.com/dadrus/heimdall/commit/8b0de6aba23a047cfee3081df878271bb17f4351","https://github.com/dadrus/heimdall/pull/3207","https://github.com/dadrus/heimdall/releases/tag/v0.17.14","https://github.com/dadrus/heimdall/security/advisories/GHSA-43jv-5j4x-qv67"],"sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-42272","license":"NIST NVD usage terms; underlying source attribution retained","enrichment":{"sourceStatus":"Deferred","weaknesses":["CWE-178","CWE-436"],"productCriteria":[],"sourceDates":{"published":"2026-05-08T04:16:22.013","lastModified":"2026-06-17T10:47:36.680"},"relatedAdvisories":[],"note":"NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON."},"key":"nvd:CVE-2026-42272","identifiers":["CVE-2026-42272"]},"retained":false,"historicalAffected":[]}],"coverage":[]}