{"id":"DEBIAN-CVE-2026-89058","details":"A flaw was found in RESTEasy's CorsFilter, which, when configured to allow all origins (\"*\"), reflects the request's Origin header back in the Access-Control-Allow-Origin response together with Access-Control-Allow-Credentials: true. This permissive cross-origin policy allows a malicious website to make credentialed cross-origin requests and read authenticated responses from a victim's session, resulting in a loss of confidentiality.","modified":"2026-09-20T08:47:33.419569843Z","published":"2026-09-18T08:17:01.653Z","upstream":["CVE-2026-89058"],"references":[{"type":"ADVISORY","url":"https://security-tracker.debian.org/tracker/CVE-2026-89058"}],"affected":[{"package":{"name":"resteasy3.0","ecosystem":"Debian:12","purl":"pkg:deb/debian/resteasy3.0?arch=source&distro=bookworm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.0.26-6"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-89058.json"}},{"package":{"name":"resteasy3.0","ecosystem":"Debian:13","purl":"pkg:deb/debian/resteasy3.0?arch=source&distro=trixie"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.0.26-6"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-89058.json"}},{"package":{"name":"resteasy3.0","ecosystem":"Debian:14","purl":"pkg:deb/debian/resteasy3.0?arch=source&distro=forky"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.0.26-6"],"ecosystem_specific":{"urgency":"not yet assigned"},"database_specific":{"source":"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-89058.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N"}]}