{"id":"JLSEC-2026-1205","summary":"libcurl might in some circumstances reuse the wrong connection for SMB(S) transfers. libcurl...","details":"libcurl might in some circumstances reuse the wrong connection for SMB(S)\ntransfers.\n\nlibcurl features a pool of recent connections so that subsequent requests can\nreuse an existing connection to avoid overhead.\n\nWhen reusing a connection a range of criteria must be met. Due to a logical\nerror in the code, a network transfer operation that was requested by an\napplication could wrongfully reuse an existing SMB connection to the same\nserver that was using a different 'share' than the new subsequent transfer\nshould.\n\nThis could in unlucky situations lead to the download of the wrong file or the\nupload of a file to the wrong place. When this happens, the same credentials\nare used and the server name is the same.","modified":"2026-08-07T20:29:10.903941571Z","published":"2026-08-07T20:11:58.984Z","upstream":["CVE-2026-5773","EUVD-2026-29924","GHSA-rp9q-8q5w-ch44"],"database_specific":{"sources":[{"published":"2026-05-13T13:01:56.307Z","url":"https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-5773","html_url":"https://nvd.nist.gov/vuln/detail/CVE-2026-5773","database_specific":{"status":"Analyzed"},"id":"CVE-2026-5773","imported":"2026-08-07T19:54:38.615Z","modified":"2026-06-17T10:59:37.340Z"},{"id":"GHSA-rp9q-8q5w-ch44","imported":"2026-08-07T19:56:09.568Z","modified":"2026-05-13T21:32:05Z","published":"2026-05-13T18:30:52Z","url":"https://api.github.com/advisories/GHSA-rp9q-8q5w-ch44","html_url":"https://github.com/advisories/GHSA-rp9q-8q5w-ch44"},{"modified":"2026-05-13T17:45:08Z","published":"2026-05-13T08:27:42Z","url":"https://euvdservices.enisa.europa.eu/api/enisaid?id=EUVD-2026-29924","html_url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-29924","id":"EUVD-2026-29924","imported":"2026-08-07T19:55:22.670Z"}],"license":"CC-BY-4.0"},"references":[{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2026/04/29/9"},{"type":"WEB","url":"https://curl.se/docs/CVE-2026-5773.html"},{"type":"WEB","url":"https://curl.se/docs/CVE-2026-5773.json"},{"type":"WEB","url":"https://github.com/advisories/GHSA-rp9q-8q5w-ch44"},{"type":"WEB","url":"https://hackerone.com/reports/3650689"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-5773"}],"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":"8.20.0+0"}]}],"database_specific":{"source":"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-1205.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":"8.20.0+0"}]}],"database_specific":{"source":"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-1205.json"}}],"schema_version":"1.8.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"}]}