{"id":"JLSEC-2026-782","details":"A flaw was found in libssh. A remote attacker, by controlling client configuration files or `known_hosts` files, could craft specific hostnames that when processed by the `match_pattern()` function can lead to inefficient regular expression backtracking. This can cause timeouts and resource exhaustion, resulting in a Denial of Service (DoS) for the client.","modified":"2026-07-25T18:24:02.306819022Z","published":"2026-07-23T14:46:44.710Z","upstream":["CVE-2026-0967"],"database_specific":{"license":"CC-BY-4.0","sources":[{"published":"2026-03-26T21:17:00.970Z","url":"https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-0967","html_url":"https://nvd.nist.gov/vuln/detail/CVE-2026-0967","database_specific":{"status":"Modified"},"id":"CVE-2026-0967","imported":"2026-07-22T03:16:27.709Z","modified":"2026-06-17T10:11:42.407Z"}]},"references":[{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:18160"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:18683"},{"type":"WEB","url":"https://access.redhat.com/security/cve/CVE-2026-0967"},{"type":"WEB","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2436981"},{"type":"WEB","url":"https://www.libssh.org/2026/02/10/libssh-0-12-0-and-0-11-4-security-releases/"}],"affected":[{"package":{"name":"libssh_jll","ecosystem":"Julia","purl":"pkg:julia/libssh_jll?uuid=a8d4f100-aa25-5708-be18-96e0805c2c9d"},"ranges":[{"type":"SEMVER","events":[{"introduced":"0"},{"fixed":"0.11.4+0"}]}],"database_specific":{"source":"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-782.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:U/C:N/I:N/A:L"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"}]}