{"id":"JLSEC-2026-434","summary":"Due to a mistake in libcurl's WebSocket code, a malicious server can send a particularly crafted...","details":"Due to a mistake in libcurl's WebSocket code, a malicious server can send a\nparticularly crafted packet which makes libcurl get trapped in an endless\nbusy-loop.\n\nThere is no other way for the application to escape or exit this loop other\nthan killing the thread/process.\n\nThis might be used to DoS libcurl-using application.","modified":"2026-05-04T13:32:47.047145198Z","published":"2026-05-04T13:12:06.605Z","upstream":["CVE-2025-5399","EUVD-2025-17371","GHSA-8h93-38hx-vv92"],"database_specific":{"sources":[{"url":"https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2025-5399","id":"CVE-2025-5399","imported":"2026-05-02T08:39:49.407Z","html_url":"https://nvd.nist.gov/vuln/detail/CVE-2025-5399","modified":"2025-07-30T19:41:33.457Z","database_specific":{"status":"Analyzed"},"published":"2025-06-07T08:15:20.687Z"},{"url":"https://api.github.com/advisories/GHSA-8h93-38hx-vv92","id":"GHSA-8h93-38hx-vv92","html_url":"https://github.com/advisories/GHSA-8h93-38hx-vv92","imported":"2026-05-02T08:42:42.714Z","modified":"2025-07-30T21:32:41Z","published":"2025-06-07T09:30:18Z"},{"modified":"2025-06-09T13:20:29Z","id":"EUVD-2025-17371","html_url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2025-17371","url":"https://euvdservices.enisa.europa.eu/api/enisaid?id=EUVD-2025-17371","imported":"2026-05-02T08:42:17.767Z","published":"2025-06-07T07:49:09Z"}],"license":"CC-BY-4.0"},"references":[{"type":"WEB","url":"http://www.openwall.com/lists/oss-security/2025/06/04/2"},{"type":"WEB","url":"https://curl.se/docs/CVE-2025-5399.html"},{"type":"WEB","url":"https://curl.se/docs/CVE-2025-5399.json"},{"type":"WEB","url":"https://github.com/advisories/GHSA-8h93-38hx-vv92"},{"type":"WEB","url":"https://hackerone.com/reports/3168039"},{"type":"WEB","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-5399"}],"affected":[{"package":{"name":"CURL_jll","ecosystem":"Julia","purl":"pkg:julia/CURL_jll?uuid=b21e61f3-bafc-59ac-ab14-4c5c62d6588d"},"ranges":[{"type":"SEMVER","events":[{"introduced":"8.13.0+0"},{"fixed":"8.14.1+0"}]}],"database_specific":{"source":"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-434.json"}},{"package":{"name":"LibCURL_jll","ecosystem":"Julia","purl":"pkg:julia/LibCURL_jll?uuid=deac9b47-8bc7-5906-a0fe-35ac56dc84c0"},"ranges":[{"type":"SEMVER","events":[{"introduced":"8.13.0+0"},{"fixed":"8.14.1+0"}]}],"database_specific":{"source":"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-434.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:N/I:N/A:H"}]}