JLSEC-2026-79

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Source
https://github.com/JuliaLang/SecurityAdvisories.jl/blob/main/advisories/published/2026/JLSEC-2026-79.md
Import Source
https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-79.json
JSON Data
https://api.osv.dev/v1/vulns/JLSEC-2026-79
Upstream
Published
2026-04-11T14:47:51.147Z
Modified
2026-07-18T00:02:23.374449678Z
Severity
  • 7.8 (High) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
[none]
Details

fontconfig before 2.17.1 has an off-by-one error in allocation during sfnt capability handling, leading to a one-byte out-of-bounds write, and potentially a crash or code execution. This is in FcFontCapabilities in fcfreetype.c.

Database specific 
{
    "sources": [
        {
            "modified": "2026-06-17T10:38:32.393Z",
            "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-34085",
            "published": "2026-03-25T17:17:09.210Z",
            "html_url": "https://nvd.nist.gov/vuln/detail/CVE-2026-34085",
            "id": "CVE-2026-34085",
            "database_specific": {
                "status": "Analyzed"
            },
            "imported": "2026-07-17T22:39:59.604Z"
        }
    ],
    "license": "CC-BY-4.0"
}
References

Affected packages

Julia / Fontconfig_jll

Package

Name
Fontconfig_jll
Purl
pkg:julia/Fontconfig_jll?uuid=a3f928ae-7b40-5064-980b-68af3947d34b

Affected ranges

Type
SEMVER
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.17.1+0

Database specific

source 
"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-79.json"