{"id":"JLSEC-2026-778","details":"A flaw was found in libssh. This vulnerability allows local man-in-the-middle attacks, security downgrades of SSH (Secure Shell) connections, and manipulation of trusted host information, posing a significant risk to the confidentiality, integrity, and availability of SSH communications via an insecure default configuration on Windows systems where the library automatically loads configuration files from the `C:\\etc` directory, which can be created and modified by unprivileged local users.","modified":"2026-07-25T18:24:54.267336857Z","published":"2026-07-23T14:46:44.710Z","upstream":["CVE-2025-14821"],"database_specific":{"license":"CC-BY-4.0","sources":[{"published":"2026-04-07T17:16:25.433Z","url":"https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2025-14821","html_url":"https://nvd.nist.gov/vuln/detail/CVE-2025-14821","database_specific":{"status":"Analyzed"},"id":"CVE-2025-14821","imported":"2026-07-22T03:16:27.746Z","modified":"2026-06-30T07:16:31.023Z"}]},"references":[{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:7067"},{"type":"WEB","url":"https://access.redhat.com/security/cve/CVE-2025-14821"},{"type":"WEB","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2423148"},{"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":"0.12.1+0"}]}],"database_specific":{"source":"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-778.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}