{"id":"CVE-2023-27535","revision":"2940c4c924e84f7bbea2ef663749eb54","records":[{"revision":"2940c4c924e84f7bbea2ef663749eb54","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2023-27535","aliases":[],"title":"An authentication bypass vulnerability exists in libcurl <8.0.0 in the FTP connection reuse feature that can result in wrong credentials being used during subsequent transfers. Previously created connections are kept in a connection pool fo…","description":"An authentication bypass vulnerability exists in libcurl <8.0.0 in the FTP connection reuse feature that can result in wrong credentials being used during subsequent transfers. Previously created connections are kept in a connection pool for reuse if they match the current setup. However, certain FTP settings such as CURLOPT_FTP_ACCOUNT, CURLOPT_FTP_ALTERNATIVE_TO_USER, CURLOPT_FTP_SSL_CCC, and CURLOPT_USE_SSL were not included in the configuration match checks, causing them to match too easily. This could lead to libcurl using the wrong credentials when performing a transfer, potentially allowing unauthorized access to sensitive information.","state":0,"publishedAt":"2023-03-30T00:00:00+00:00","modifiedAt":"2026-10-14T22:41:44.362+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/1892780","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-2023-27535","license":"CVE Program Terms of Use","key":"cve-program:CVE-2023-27535","identifiers":["CVE-2023-27535"]},"retained":false,"historicalAffected":[]}],"coverage":[]}