JLSEC-2026-1372

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Source

https://github.com/JuliaLang/SecurityAdvisories.jl/blob/main/advisories/published/2026/JLSEC-2026-1372.md

Import Source

https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-1372.json

JSON Data

https://api.osv.dev/v1/vulns/JLSEC-2026-1372

Upstream

CVE-2026-53586

EUVD-2026-63550

Published

2026-08-21T21:14:18.508Z

Modified

2026-08-21T21:30:03.262865932Z

Severity

6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N 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, the built-in HTTP transport in src/libgit2/transports/http.c follows an offsite initial redirect, and handle_remote_auth and handle_auth pass transport->owner->url instead of transport->server.url to the credential callback when the redirected host returns 401 Unauthorized. A callback that scopes credentials to the original trusted URL can therefore return GIT_CREDENTIAL_USERPASS_PLAINTEXT credentials that libgit2 stores in transport->server.cred and sends as an Authorization header to the redirected host. An attacker who controls a trusted Git host or an open redirect on that host can disclose HTTP Basic credentials, personal access tokens, or equivalent credentials. This issue is fixed in versions 1.8.6 and 1.9.5.

Database specific

{
    "license": "CC-BY-4.0",
    "sources": [
        {
            "database_specific": {
                "status": "Received"
            },
            "id": "CVE-2026-53586",
            "html_url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53586",
            "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-53586",
            "published": "2026-08-20T19:16:54.983Z",
            "modified": "2026-08-20T19:16:54.983Z",
            "imported": "2026-08-21T20:45:35.145Z"
        },
        {
            "id": "EUVD-2026-63550",
            "html_url": "https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-63550",
            "url": "https://euvdservices.enisa.europa.eu/api/enisaid?id=EUVD-2026-63550",
            "published": "2026-08-20T18:40:08Z",
            "modified": "2026-08-20T18:40:08Z",
            "affected": {
                "libgit2:libgit2": [
                    "1.9.0, < 1.9.5",
                    "< 1.8.6"
                ]
            },
            "imported": "2026-08-21T20:45:01.753Z"
        }
    ]
}

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-2026-1372.json"