{"id":"DEBIAN-CVE-2026-54282","details":"Starlette is a lightweight ASGI framework/toolkit. Prior to 1.3.0, the HTTP request path is not validated before being used to reconstruct request.url. Because request.url is rebuilt by concatenating {scheme}://{host}{path} and re-parsing the result, a path that does not begin with / (for example @google.com) moves the authority boundary during re-parsing, so request.url.hostname and request.url.netloc become attacker-controlled. Code that reads request.url.hostname (rather than the Host header or scope) can therefore be misled into trusting an attacker-supplied host. This vulnerability is fixed in 1.3.0.","modified":"2026-09-01T16:06:50.837286532Z","published":"2026-06-22T18:16:46.807Z","upstream":["CVE-2026-54282"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-54282"}],"affected":[{"package":{"name":"starlette","ecosystem":"Debian:12","purl":"pkg:deb/debian/starlette?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.26.1-1+deb12u2"}]}],"versions":["0.26.1-1","0.26.1-1+deb12u1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-54282.json"}},{"package":{"name":"starlette","ecosystem":"Debian:13","purl":"pkg:deb/debian/starlette?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"0.46.1-3+deb13u3"}]}],"versions":["0.46.1-3","0.46.1-3+deb13u1","0.46.1-3+deb13u2"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-54282.json"}},{"package":{"name":"starlette","ecosystem":"Debian:14","purl":"pkg:deb/debian/starlette?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"1.3.1-1"}]}],"versions":["0.46.1-3","0.50.0-1","1.0.0-1","1.1.0-1"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/osv-test-debian-osv/debian-cve-osv/DEBIAN-CVE-2026-54282.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N"}]}