JLSEC-2026-354

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Source

https://github.com/JuliaLang/SecurityAdvisories.jl/blob/main/advisories/published/2026/JLSEC-2026-354.md

Import Source

https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-354.json

JSON Data

https://api.osv.dev/v1/vulns/JLSEC-2026-354

Upstream

CVE-2026-34734
EUVD-2026-21020

Published

2026-04-29T13:21:01Z

Modified

2026-07-25T18:24:20Z

Severity

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

Summary

[none]

Details

HDF5 is software for managing data. In 1.14.1-2 and earlier, a heap-use-after-free was found in the h5dump helper utility. An attacker who can supply a malicious h5 file can trigger a heap use-after-free. The freed object is referenced in a memmove call from H5T__conv_struct. The original object was allocated by H5D__typeinfo_init_phase3 and freed by H5D__typeinfo_term.

Database specific

{
    "license":  "CC-BY-4.0",
    "sources":  [
        {
            "database_specific":  {
                "status":  "Modified"
            },
            "html_url":  "https://nvd.nist.gov/vuln/detail/CVE-2026-34734",
            "id":  "CVE-2026-34734",
            "imported":  "2026-07-17T21:42:18.259Z",
            "modified":  "2026-07-15T02:20:34.123Z",
            "published":  "2026-04-09T20:16:25.437Z",
            "url":  "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-34734"
        },
        {
            "html_url":  "https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-21020",
            "id":  "EUVD-2026-21020",
            "imported":  "2026-07-17T21:42:26.877Z",
            "modified":  "2026-06-30T12:09:10Z",
            "published":  "2026-04-09T19:01:21Z",
            "url":  "https://euvdservices.enisa.europa.eu/api/enisaid?id=EUVD-2026-21020"
        }
    ]
}

References

Affected packages

Julia / HDF5_jll

Package

Name: HDF5_jll
Purl: pkg:julia/HDF5_jll?uuid=0234f1f7-429e-5d53-9886-15a909be8d59

Affected ranges

Type: SEMVER
Events: Introduced

0 Unknown introduced version / All previous versions are affected

Fixed

1.14.2+0

Database specific

source

"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-354.json"