{"id":"CVE-2025-47908","details":"Middleware causes a prohibitive amount of heap allocations when processing malicious preflight requests that include a Access-Control-Request-Headers (ACRH) header whose value contains many commas. This behavior can be abused by attackers to produce undue load on the middleware/server as an attempt to cause a denial of service.","aliases":["GHSA-mh55-gqvf-xfwm","GO-2024-2883"],"modified":"2026-04-10T05:27:46.668095Z","published":"2025-08-06T21:15:29.313Z","related":["CGA-gcmv-pxrj-3x4w","SUSE-SU-2025:3817-1","SUSE-SU-2025:3819-1","SUSE-SU-2025:4457-1","SUSE-SU-2025:4481-1","openSUSE-SU-2025:15424-1"],"references":[{"type":"WEB","url":"https://pkg.go.dev/vuln/GO-2024-2883"},{"type":"REPORT","url":"https://github.com/rs/cors/issues/170"},{"type":"FIX","url":"https://github.com/rs/cors/pull/171"}],"affected":[{"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-47908.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}