JLSEC-2025-31

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Source
https://github.com/JuliaLang/SecurityAdvisories.jl/blob/main/advisories/published/2025/JLSEC-2025-31.md
Import Source
https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2025/JLSEC-2025-31.json
JSON Data
https://api.osv.dev/v1/vulns/JLSEC-2025-31
Upstream
Published
2025-10-10T15:04:01.319Z
Modified
2026-07-25T18:23:40.314613538Z
Severity
  • 5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N CVSS Calculator
Summary
An authentication bypass vulnerability exists in libcurl <8.0.0 in the FTP connection reuse feature...
Details

An authentication bypass vulnerability exists in libcurl <8.0.0 in the FTP connection reuse feature that can result in wrong credentials being used during subsequent transfers. Previously created connections are kept in a connection pool for reuse if they match the current setup. However, certain FTP settings such as CURLOPT_FTP_ACCOUNT, CURLOPT_FTP_ALTERNATIVE_TO_USER, CURLOPT_FTP_SSL_CCC, and CURLOPT_USE_SSL were not included in the configuration match checks, causing them to match too easily. This could lead to libcurl using the wrong credentials when performing a transfer, potentially allowing unauthorized access to sensitive information.

Database specific 
{
    "license": "CC-BY-4.0",
    "sources": [
        {
            "modified": "2026-06-17T05:45:25.500Z",
            "published": "2023-03-30T20:15:07.483Z",
            "id": "CVE-2023-27535",
            "imported": "2026-07-17T20:58:23.345Z",
            "html_url": "https://nvd.nist.gov/vuln/detail/CVE-2023-27535",
            "database_specific": {
                "status": "Modified"
            },
            "url": "https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2023-27535"
        }
    ]
}
References

Affected packages

Julia / CURL_jll

Package

Name
CURL_jll
Purl
pkg:julia/CURL_jll?uuid=b21e61f3-bafc-59ac-ab14-4c5c62d6588d

Affected ranges

Type
SEMVER
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
8.5.0+0

Database specific

source 
"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2025/JLSEC-2025-31.json"

Julia / LibCURL_jll

Package

Name
LibCURL_jll
Purl
pkg:julia/LibCURL_jll?uuid=deac9b47-8bc7-5906-a0fe-35ac56dc84c0

Affected ranges

Type
SEMVER
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
8.0.1+0

Database specific

source 
"https://github.com/JuliaLang/SecurityAdvisories.jl/tree/generated/osv/2025/JLSEC-2025-31.json"