{"id":"GO-2026-5200","summary":"Heimdall: Case-sensitive host matching may lead to policy bypass in github.com/dadrus/heimdall","details":"Heimdall: Case-sensitive host matching may lead to policy bypass in github.com/dadrus/heimdall","aliases":["CVE-2026-42273","GHSA-72h4-mxfc-jx37"],"modified":"2026-06-25T19:45:13.917171146Z","published":"2026-06-25T18:43:15Z","database_specific":{"url":"https://pkg.go.dev/vuln/GO-2026-5200","review_status":"UNREVIEWED"},"references":[{"type":"ADVISORY","url":"https://github.com/dadrus/heimdall/security/advisories/GHSA-72h4-mxfc-jx37"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-42273"},{"type":"FIX","url":"https://github.com/dadrus/heimdall/commit/3d05e56a9e7ef0355f17482b4322054af4e85943"},{"type":"FIX","url":"https://github.com/dadrus/heimdall/pull/3208"},{"type":"WEB","url":"https://github.com/dadrus/heimdall/releases/tag/v0.17.14"}],"affected":[{"package":{"name":"github.com/dadrus/heimdall","ecosystem":"Go","purl":"pkg:golang/github.com/dadrus/heimdall"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.17.14"}]}],"ecosystem_specific":{},"database_specific":{"source":"https://vuln.go.dev/ID/GO-2026-5200.json"}}],"schema_version":"1.7.5"}