JLSEC-2026-522

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Source
https://github.com/JuliaLang/SecurityAdvisories.jl/blob/main/advisories/published/2026/JLSEC-2026-522.md
Import Source
https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-522.json
JSON Data
https://api.osv.dev/v1/vulns/JLSEC-2026-522
Upstream
Published
2026-05-26T14:17:50.003Z
Modified
2026-05-26T14:30:03.273513996Z
Summary
[none]
Details

A NULL pointer dereference flaw was found in GnuTLS. As Nettle's hash update functions internally call memcpy, providing zero-length input may cause undefined behavior. This flaw leads to a denial of service after authentication in rare circumstances.

Database specific 
{
    "license": "CC-BY-4.0",
    "sources": [
        {
            "published": "2022-08-24T16:15:09.927Z",
            "html_url": "https://nvd.nist.gov/vuln/detail/CVE-2021-4209",
            "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2021-4209",
            "database_specific": {
                "status": "Modified"
            },
            "modified": "2024-11-21T06:37:09.190Z",
            "id": "CVE-2021-4209",
            "imported": "2026-05-22T18:34:35.098Z"
        }
    ]
}
References

Affected packages

Julia / GnuTLS_jll

Package

Name
GnuTLS_jll
Purl
pkg:julia/GnuTLS_jll?uuid=0951126a-58fd-58f1-b5b3-b08c7c4a876d

Affected ranges

Type
SEMVER
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.7.8+0

Database specific

source 
"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-522.json"