{"id":"JLSEC-2026-411","summary":"This flaw allows a malicious HTTP server to set \"super cookies\" in curl that are then passed back...","details":"This flaw allows a malicious HTTP server to set \"super cookies\" in curl that\nare then passed back to more origins than what is otherwise allowed or\npossible. This allows a site to set cookies that then would get sent to\ndifferent and unrelated sites and domains.\n\nIt could do this by exploiting a mixed case flaw in curl's function that\nverifies a given cookie domain against the Public Suffix List (PSL). For\nexample a cookie could be set with `domain=co.UK` when the URL used a lower\ncase hostname `curl.co.uk`, even though `co.uk` is listed as a PSL domain.","modified":"2026-05-04T13:32:43.732364595Z","published":"2026-05-04T13:12:06.605Z","upstream":["CVE-2023-46218","EUVD-2023-50460","GHSA-59mm-6rr4-j9p2"],"database_specific":{"sources":[{"html_url":"https://nvd.nist.gov/vuln/detail/CVE-2023-46218","modified":"2025-06-30T17:15:29.967Z","id":"CVE-2023-46218","imported":"2026-05-02T08:39:47.905Z","database_specific":{"status":"Modified"},"url":"https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2023-46218","published":"2023-12-07T01:15:07.160Z"},{"html_url":"https://github.com/advisories/GHSA-59mm-6rr4-j9p2","modified":"2025-06-30T18:32:42Z","id":"GHSA-59mm-6rr4-j9p2","imported":"2026-05-02T08:42:51.351Z","url":"https://api.github.com/advisories/GHSA-59mm-6rr4-j9p2","published":"2023-12-07T03:30:32Z"},{"html_url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2023-50460","modified":"2025-06-30T16:20:37Z","id":"EUVD-2023-50460","imported":"2026-05-02T08:42:03.310Z","url":"https://euvdservices.enisa.europa.eu/api/enisaid?id=EUVD-2023-50460","published":"2023-12-07T01:10:34Z"}],"license":"CC-BY-4.0"},"references":[{"type":"WEB","url":"https://curl.se/docs/CVE-2023-46218.html"},{"type":"WEB","url":"https://github.com/advisories/GHSA-59mm-6rr4-j9p2"},{"type":"WEB","url":"https://hackerone.com/reports/2212193"},{"type":"WEB","url":"https://lists.debian.org/debian-lts-announce/2023/12/msg00015.html"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3ZX3VW67N4ACRAPMV2QS2LVYGD7H2MVE"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/3ZX3VW67N4ACRAPMV2QS2LVYGD7H2MVE/"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UOGXU25FMMT2X6UUITQ7EZZYMJ42YWWD"},{"type":"WEB","url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/UOGXU25FMMT2X6UUITQ7EZZYMJ42YWWD/"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2023-46218"},{"type":"WEB","url":"https://security.netapp.com/advisory/ntap-20240125-0007"},{"type":"WEB","url":"https://security.netapp.com/advisory/ntap-20240125-0007/"},{"type":"WEB","url":"https://www.debian.org/security/2023/dsa-5587"}],"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/2026/JLSEC-2026-411.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":"8.5.0+0"}]}],"database_specific":{"source":"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-411.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:L/I:L/A:N"}]}