{"id":"CVE-2026-89058","summary":"Resteasy-core: resteasy: corsfilter reflects arbitrary origin with credentials under wildcard config","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.","aliases":["GHSA-972r-f3fv-whm3"],"modified":"2026-09-20T11:47:28.095511839Z","published":"2026-09-18T07:20:29.162Z","database_specific":{"cna_assigner":"redhat","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89058.json","unresolved_ranges":[{"extracted_events":[{"fixed":"6.2.19.Final"},{"introduced":"7.0.0.Alpha1"},{"fixed":"7.0.5.Final"}],"source":"AFFECTED_FIELD"}]},"references":[{"type":"WEB","url":"https://access.redhat.com/downloads/content/package-browser/"},{"type":"WEB","url":"https://access.redhat.com/jbossnetwork/restricted/listSoftware.html"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2026-89058"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/89xxx/CVE-2026-89058.json"},{"type":"ADVISORY","url":"https://github.com/resteasy/resteasy/security/advisories/GHSA-972r-f3fv-whm3"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-89058"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2519775"},{"type":"FIX","url":"https://github.com/resteasy/resteasy/commit/efeb2b7"},{"type":"PACKAGE","url":"https://github.com/resteasy/resteasy"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/resteasy/resteasy","events":[{"introduced":"0"},{"fixed":"efeb2b7"}],"database_specific":{"source":"REFERENCES"}}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/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"}]}