{"id":"CVE-2026-89058","aliases":[],"cve":{"records":[{"id":"CVE-2026-89058","source":"redhat","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-09-10T18:20:52.114Z","published":"2026-09-18T07:20:29.162Z","modified":"2026-10-29T22:08:45.938Z"}],"publishers":[{"name":"redhat","role":"CNA","organizationId":"53f830b8-0a3f-465b-8143-3b8a9948e749","modified":"2026-10-29T22:08:45.938Z"},{"name":"CISA-ADP","role":"ADP","organizationId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","modified":"2026-09-19T13:50:50.959Z"}],"references":[{"url":"https://access.redhat.com/errata/RHSA-2026:83082","tags":["vendor-advisory","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://access.redhat.com/errata/RHSA-2026:83520","tags":["vendor-advisory","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://access.redhat.com/errata/RHSA-2026:85234","tags":["vendor-advisory","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://access.redhat.com/errata/RHSA-2026:92408","tags":["vendor-advisory","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://access.redhat.com/security/cve/CVE-2026-89058","tags":["vdb-entry","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2519775","tags":["issue-tracking","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://github.com/resteasy/resteasy/commit/efeb2b7","tags":[],"source":"redhat"},{"url":"https://github.com/resteasy/resteasy/security/advisories/GHSA-972r-f3fv-whm3","tags":[],"source":"redhat"},{"url":"https://github.com/resteasy/resteasy/security/advisories/GHSA-972r-f3fv-whm3","tags":["exploit"],"source":"CISA-ADP"}],"weaknesses":[{"id":"CWE-346","description":"Origin Validation Error","source":"redhat"},{"id":"CWE-942","description":"CWE-942 Permissive Cross-domain Policy with Untrusted Domains","source":"CISA-ADP"}],"applicability":[],"prioritization":[{"source":"CISA-ADP","type":"SSVC","role":"CISA Coordinator","timestamp":"2026-09-18T11:59:37.120915Z","decisions":[{"name":"Exploitation","value":"poc"},{"name":"Automatable","value":"no"},{"name":"Technical Impact","value":"partial"}]}]},"title":"Resteasy-core: resteasy: corsfilter reflects arbitrary origin with credentials under wildcard config","titleSource":"redhat","descriptionSource":"redhat","description":"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. 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