{"id":"JLSEC-2025-31","summary":"An authentication bypass vulnerability exists in libcurl \u003c8.0.0 in the FTP connection reuse feature ...","details":"An authentication bypass vulnerability exists in libcurl \u003c8.0.0 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.","modified":"2025-11-03T00:19:26.042326Z","published":"2025-10-10T15:04:01.319Z","upstream":["CVE-2023-27535"],"database_specific":{"sources":[{"url":"https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2023-27535","html_url":"https://nvd.nist.gov/vuln/detail/CVE-2023-27535","published":"2023-03-30T20:15:07.483Z","modified":"2025-06-09T15:15:28.903Z","id":"CVE-2023-27535","imported":"2025-10-10T14:33:22.320Z"}],"license":"CC-BY-4.0"},"references":[{"type":"WEB","url":"https://hackerone.com/reports/1892780"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2023/04/msg00025.html"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/36NBD5YLJXXEDZLDGNFCERWRYJQ6LAQW/"},{"type":"WEB","url":"https://security.gentoo.org/glsa/202310-12"},{"type":"WEB","url":"https://security.netapp.com/advisory/ntap-20230420-0010/"}],"affected":[{"package":{"name":"CURL_jll","ecosystem":"Julia","purl":"pkg:julia/CURL_jll?uuid=b21e61f3-bafc-59ac-ab14-4c5c62d6588d"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"8.5.0+0"}]}],"database_specific":{"source":"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2025/JLSEC-2025-31.json"}},{"package":{"name":"LibCURL_jll","ecosystem":"Julia","purl":"pkg:julia/LibCURL_jll?uuid=deac9b47-8bc7-5906-a0fe-35ac56dc84c0"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"8.0.1+0"}]}],"database_specific":{"source":"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2025/JLSEC-2025-31.json"}}],"schema_version":"1.7.3"}