JLSEC-2026-778

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Source

https://github.com/JuliaLang/SecurityAdvisories.jl/blob/main/advisories/published/2026/JLSEC-2026-778.md

Import Source

https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-778.json

JSON Data

https://api.osv.dev/v1/vulns/JLSEC-2026-778

Upstream

CVE-2025-14821

Published

2026-07-23T14:46:44.710Z

Modified

2026-07-25T18:24:54.267336857Z

Severity

7.0 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator

Summary

[none]

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.

Database specific

{
    "license": "CC-BY-4.0",
    "sources": [
        {
            "id": "CVE-2025-14821",
            "html_url": "https://nvd.nist.gov/vuln/detail/CVE-2025-14821",
            "imported": "2026-07-22T03:16:27.746Z",
            "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2025-14821",
            "modified": "2026-06-30T07:16:31.023Z",
            "published": "2026-04-07T17:16:25.433Z",
            "database_specific": {
                "status": "Analyzed"
            }
        }
    ]
}

References

Affected packages

Julia / libssh_jll

Package

Name: libssh_jll
Purl: pkg:julia/libssh_jll?uuid=a8d4f100-aa25-5708-be18-96e0805c2c9d

Affected ranges

Type: SEMVER
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

0.12.1+0

Database specific

source

"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-778.json"