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.test.osv.dev/v1/vulns/JLSEC-2026-522
Upstream
Published
2026-05-26T14:17:50Z
Modified
2026-07-18T18:25:34Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
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":  [
        {
            "database_specific":  {
                "status":  "Modified"
            },
            "html_url":  "https://nvd.nist.gov/vuln/detail/CVE-2021-4209",
            "id":  "CVE-2021-4209",
            "imported":  "2026-07-17T22:03:59.574Z",
            "modified":  "2026-06-17T04:19:13.347Z",
            "published":  "2022-08-24T16:15:09.927Z",
            "url":  "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2021-4209"
        }
    ]
}
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
0 Unknown 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"