JLSEC-2026-1369

See a problem?
Please try reporting it to the source first.

Source

https://github.com/JuliaLang/SecurityAdvisories.jl/blob/main/advisories/published/2026/JLSEC-2026-1369.md

Import Source

https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2026/JLSEC-2026-1369.json

JSON Data

https://api.osv.dev/v1/vulns/JLSEC-2026-1369

Upstream

CVE-2026-53583

EUVD-2026-63549

Published

2026-08-21T21:14:18.508Z

Modified

2026-08-21T21:30:03.274154849Z

Severity

6.5 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/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, verify_server_cert in src/libgit2/streams/openssl.c uses an inverted !!memcmp result in the GEN_IPADD branch when comparing an IP-literal host with a certificate IP SubjectAltName. OpenSSL builds reject matching IP addresses and accept mismatched IP addresses, allowing a network attacker with a CA-trusted certificate containing any IP SubjectAltName to intercept libgit2 connections to IP-literal HTTPS URLs. DNS SubjectAltName validation and non-OpenSSL TLS backends are not affected. 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-2026-53583",
            "published": "2026-08-20T19:16:54.500Z",
            "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2026-53583",
            "html_url": "https://nvd.nist.gov/vuln/detail/CVE-2026-53583",
            "modified": "2026-08-20T19:16:54.500Z",
            "imported": "2026-08-21T20:45:22.660Z"
        },
        {
            "id": "EUVD-2026-63549",
            "html_url": "https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-63549",
            "url": "https://euvdservices.enisa.europa.eu/api/enisaid?id=EUVD-2026-63549",
            "published": "2026-08-20T18:39:03Z",
            "modified": "2026-08-20T19:04:42Z",
            "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-2026-1369.json"