JLSEC-2026-1301

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Source
https://github.com/JuliaLang/SecurityAdvisories.jl/blob/main/advisories/published/2026/JLSEC-2026-1301.md
Import Source
https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-1301.json
JSON Data
https://api.osv.dev/v1/vulns/JLSEC-2026-1301
Upstream
Published
2026-08-13T10:57:26.913Z
Modified
2026-08-13T11:00:03.421298991Z
Severity
  • 6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L CVSS Calculator
Summary
[none]
Details

libxls through version 1.6.3 contains a use of uninitialized memory vulnerability in the OLE container parser. Memory allocated for the Master Sector Allocation Table (MSAT) in read_MSAT() is not fully initialized before being consumed by ole2_validate_sector_chain(), which may result in application crashes or potential information disclosure when processing a crafted XLS file

Database specific 
{
    "sources": [
        {
            "imported": "2026-08-12T16:06:13.499Z",
            "id": "CVE-2026-26824",
            "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-26824",
            "html_url": "https://nvd.nist.gov/vuln/detail/CVE-2026-26824",
            "modified": "2026-07-22T20:10:00.127Z",
            "database_specific": {
                "status": "Analyzed"
            },
            "published": "2026-06-03T20:16:18.677Z"
        }
    ],
    "license": "CC-BY-4.0"
}
References

Affected packages

Julia / libxls_jll

Package

Name
libxls_jll
Purl
pkg:julia/libxls_jll?uuid=86717fa1-76ed-5f2d-aba0-009d7207923f

Affected ranges

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

Database specific

source 
"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-1301.json"