JLSEC-2026-1126

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Source

https://github.com/JuliaLang/SecurityAdvisories.jl/blob/main/advisories/published/2026/JLSEC-2026-1126.md

Import Source

https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-1126.json

JSON Data

https://api.osv.dev/v1/vulns/JLSEC-2026-1126

Upstream

CVE-2026-33218

Published

2026-08-03T19:08:57.739Z

Modified

2026-08-03T19:15:03.810073652Z

Severity

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

Summary

[none]

Details

NATS-Server is a High-Performance server for NATS.io, a cloud and edge native messaging system. Prior to versions 2.11.15 and 2.12.6, a client which can connect to the leafnode port can crash the nats-server with a certain malformed message pre-authentication. Versions 2.11.15 and 2.12.6 contain a fix. As a workaround, disable leafnode support if not needed or restrict network connections to the leafnode port, if plausible without compromising the service offered.

Database specific

{
    "license": "CC-BY-4.0",
    "sources": [
        {
            "html_url": "https://nvd.nist.gov/vuln/detail/CVE-2026-33218",
            "database_specific": {
                "status": "Modified"
            },
            "modified": "2026-08-03T13:17:53.330Z",
            "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-33218",
            "imported": "2026-08-03T18:16:27.147Z",
            "id": "CVE-2026-33218",
            "published": "2026-03-25T20:16:32.623Z"
        }
    ]
}

References

Affected packages

Julia / nats_server_jll

Package

Name: nats_server_jll
Purl: pkg:julia/nats_server_jll?uuid=8b1691f7-6002-537d-bdf7-c6203599dc08

Affected ranges

Type: SEMVER
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

2.14.3+0

Database specific

source

"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-1126.json"