JLSEC-2026-520

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Source

https://github.com/JuliaLang/SecurityAdvisories.jl/blob/main/advisories/published/2026/JLSEC-2026-520.md

Import Source

https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-520.json

JSON Data

https://api.osv.dev/v1/vulns/JLSEC-2026-520

Upstream

CVE-2021-20231

Published

2026-05-26T14:17:50.003Z

Modified

2026-07-25T18:24:33.707887484Z

Severity

7.5 (High) CVSS_V2 - AV:N/AC:L/Au:N/C:P/I:P/A:P CVSS Calculator
9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator

Summary

[none]

Details

A flaw was found in gnutls. A use after free issue in client sending key_share extension may lead to memory corruption and other consequences.

Database specific

{
    "license": "CC-BY-4.0",
    "sources": [
        {
            "id": "CVE-2021-20231",
            "published": "2021-03-12T19:15:13.037Z",
            "imported": "2026-07-17T22:03:47.293Z",
            "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2021-20231",
            "modified": "2026-06-17T03:33:30.757Z",
            "html_url": "https://nvd.nist.gov/vuln/detail/CVE-2021-20231",
            "database_specific": {
                "status": "Modified"
            }
        }
    ]
}

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

3.7.1+0

Database specific

source

"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-520.json"