{"id":"CVE-2026-42274","revision":"7f23396239b642c792a3cc4177591494","records":[{"revision":"7f23396239b642c792a3cc4177591494","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-42274","aliases":[],"title":"Heimdall: Authorization bypass via path normalization mismatch","description":"Heimdall is a cloud native Identity Aware Proxy and Access Control Decision service. Prior to version 0.17.14, Heimdall performs rule matching on the raw (non-normalized) request path, while downstream components may normalize dot-segments according to RFC 3986, Section 6.2.2.3. This discrepancy can result in heimdall authorizing a request for one path (e.g., /user/../admin, or URL-encoded variants such as /user/%2e%2e/admin or /user/%2e%2e%2fadmin. The latter would require the allow_encoded_slashes option to be set to on or no_decode.) while the downstream ultimately processes a different, normalized path (/admin). This issue has been patched in version 0.17.14.","state":0,"publishedAt":"2026-05-08T03:43:41.597+00:00","modifiedAt":"2026-05-11T18:20:15.059+00:00","affected":[{"ecosystem":"Vendor product","name":"heimdall","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"dadrus\",\n                    \"product\": \"heimdall\",\n                    \"versions\": [\n                        {\n                            \"version\": \"< 0.17.14\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"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":"HIGH"}],"references":["https://github.com/dadrus/heimdall/security/advisories/GHSA-3q34-rx83-r6mq","https://github.com/dadrus/heimdall/pull/3209","https://github.com/dadrus/heimdall/commit/b5dfa484b7a8c2ce6d8691c026f9da867719947a","https://github.com/dadrus/heimdall/releases/tag/v0.17.14"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-42274","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-42274","identifiers":["CVE-2026-42274"]},"retained":false,"historicalAffected":[]}],"coverage":[]}