JLSEC-2026-781

See a problem?
Please try reporting it to the source first.
Source
https://github.com/JuliaLang/SecurityAdvisories.jl/blob/main/advisories/published/2026/JLSEC-2026-781.md
Import Source
https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-781.json
JSON Data
https://api.osv.dev/v1/vulns/JLSEC-2026-781
Upstream
Published
2026-07-23T14:46:44.710Z
Modified
2026-07-23T15:00:04.718809891Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H CVSS Calculator
  • 8.2 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H CVSS Calculator
Summary
[none]
Details

A flaw was found in libssh. The API function ssh_get_hexa() is vulnerable to a denial of service when processing zero-length input. This can be exploited remotely by an attacker during GSSAPI (Generic Security Service Application Program Interface) authentication if the server's logging verbosity is set to SSH_LOG_PACKET (3) or higher. Successful exploitation could lead to a self-Denial of Service of the per-connection daemon process.

Database specific 
{
    "sources": [
        {
            "imported": "2026-07-22T03:16:27.692Z",
            "published": "2026-03-26T21:17:00.783Z",
            "database_specific": {
                "status": "Modified"
            },
            "modified": "2026-06-17T10:11:42.263Z",
            "id": "CVE-2026-0966",
            "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-0966",
            "html_url": "https://nvd.nist.gov/vuln/detail/CVE-2026-0966"
        }
    ],
    "license": "CC-BY-4.0"
}
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
0.11.4+0

Database specific

source 
"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-781.json"