JLSEC-2026-1371

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Source

https://github.com/JuliaLang/SecurityAdvisories.jl/blob/main/advisories/published/2026/JLSEC-2026-1371.md

Import Source

https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-1371.json

JSON Data

https://api.test.osv.dev/v1/vulns/JLSEC-2026-1371

Upstream

CVE-2026-53585

EUVD-2026-63548

Published

2026-08-21T21:14:18.508Z

Modified

2026-08-21T21:30:28.501589875Z

Severity

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

Summary

[none]

Details

libgit2 is a portable C implementation of the Git core methods provided as a linkable library with a solid API, allowing to build Git functionality into your application. Prior to 1.8.6 and 1.9.5, git_delta_apply in src/libgit2/delta.c trusts the attacker-controlled res_sz value parsed by hdr_sz from a delta object header and passes that amount to git__malloc before validating delta instructions. Malicious pack data supplied through git_clone, git_fetch, git_remote_fetch, git_indexer_append, or a local attacker-supplied repository can use a very small multi-level OFS_DELTA chain to retain extremely large allocations and exhaust memory. This issue is fixed in versions 1.8.6 and 1.9.5.

Database specific

{
    "sources": [
        {
            "imported": "2026-08-21T20:45:16.243Z",
            "published": "2026-08-20T19:16:54.837Z",
            "modified": "2026-08-20T19:16:54.837Z",
            "id": "CVE-2026-53585",
            "database_specific": {
                "status": "Received"
            },
            "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-53585",
            "html_url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53585"
        },
        {
            "published": "2026-08-20T18:37:44Z",
            "imported": "2026-08-21T20:45:01.754Z",
            "modified": "2026-08-20T18:37:44Z",
            "id": "EUVD-2026-63548",
            "affected": {
                "libgit2:libgit2": [
                    "1.9.0, < 1.9.5",
                    "< 1.8.6"
                ]
            },
            "url": "https://euvdservices.enisa.europa.eu/api/enisaid?id=EUVD-2026-63548",
            "html_url": "https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-63548"
        }
    ],
    "license": "CC-BY-4.0"
}

References

Affected packages

Julia / LibGit2_jll

Package

Name: LibGit2_jll
Purl: pkg:julia/LibGit2_jll?uuid=e37daf67-58a4-590a-8e99-b0245dd2ffc5

Affected ranges

Type: SEMVER
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.9.6+0

Database specific

source

"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-1371.json"