JLSEC-2026-201

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Source

https://github.com/JuliaLang/SecurityAdvisories.jl/blob/main/advisories/published/2026/JLSEC-2026-201.md

Import Source

https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-201.json

JSON Data

https://api.osv.dev/v1/vulns/JLSEC-2026-201

Upstream

CVE-2020-21686

Published

2026-04-27T13:45:07.015Z

Modified

2026-07-25T18:23:48.707925943Z

Severity

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

Summary

[none]

Details

A stack-use-after-scope issue discovered in expand_mmac_params function in preproc.c in nasm before 2.15.04 allows remote attackers to cause a denial of service via crafted asm file.

Database specific

{
    "sources": [
        {
            "html_url": "https://nvd.nist.gov/vuln/detail/CVE-2020-21686",
            "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2020-21686",
            "modified": "2026-06-17T03:03:52.463Z",
            "published": "2023-08-22T19:16:14.327Z",
            "imported": "2026-07-17T21:20:52.738Z",
            "id": "CVE-2020-21686",
            "database_specific": {
                "status": "Modified"
            }
        }
    ],
    "license": "CC-BY-4.0"
}

References

https://bugzilla.nasm.us/show_bug.cgi?id=3392643

Affected packages

Julia / NASM_jll

Package

Name: NASM_jll
Purl: pkg:julia/NASM_jll?uuid=08ca2550-6d73-57c0-8625-9b24120f3eae

Affected ranges

Type: SEMVER
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

2.16.1+0

Database specific

source

"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-201.json"