{"id":"CVE-2023-27536","revision":"08a71736be464ddaa412514549a9718d","records":[{"revision":"08a71736be464ddaa412514549a9718d","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2023-27536","aliases":[],"title":"An authentication bypass vulnerability exists libcurl <8.0.0 in the connection reuse feature which can reuse previously established connections with incorrect user permissions due to a failure to check for changes in the CURLOPT_GSSAPI_DELE…","description":"An authentication bypass vulnerability exists libcurl <8.0.0 in the connection reuse feature which can reuse previously established connections with incorrect user permissions due to a failure to check for changes in the CURLOPT_GSSAPI_DELEGATION option. This vulnerability affects krb5/kerberos/negotiate/GSSAPI transfers and could potentially result in unauthorized access to sensitive information. The safest option is to not reuse connections if the CURLOPT_GSSAPI_DELEGATION option has been changed.","state":0,"publishedAt":"2023-03-30T00:00:00+00:00","modifiedAt":"2026-10-14T22:46:21.218+00:00","affected":[{"ecosystem":"Vendor product","name":"https://github.com/curl/curl","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"n/a\",\n                    \"product\": \"https://github.com/curl/curl\",\n                    \"versions\": [\n                        {\n                            \"version\": \"Fixed in 8.0.0\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://hackerone.com/reports/1895135","https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/36NBD5YLJXXEDZLDGNFCERWRYJQ6LAQW/","https://security.netapp.com/advisory/ntap-20230420-0010/","https://lists.debian.org/debian-lts-announce/2023/04/msg00025.html","https://security.gentoo.org/glsa/202310-12"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2023-27536","license":"CVE Program Terms of Use","key":"cve-program:CVE-2023-27536","identifiers":["CVE-2023-27536"]},"retained":false,"historicalAffected":[]}],"coverage":[]}