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
2026-08-13T10:57:26Z
Modified
2026-08-13T11:00:03Z
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 (Source: CNA) 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 
{
    "license":  "CC-BY-4.0",
    "sources":  [
        {
            "database_specific":  {
                "status":  "Analyzed"
            },
            "html_url":  "https://nvd.nist.gov/vuln/detail/CVE-2026-26824",
            "id":  "CVE-2026-26824",
            "imported":  "2026-08-12T16:06:13.499Z",
            "modified":  "2026-07-22T20:10:00.127Z",
            "published":  "2026-06-03T20:16:18.677Z",
            "url":  "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-26824"
        }
    ]
}
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
0 Unknown introduced version / All previous versions are affected

Database specific

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