{"cve":"CVE-2023-6004","nvd":{"published":"2024-01-03T17:15:11.623","modified":"2026-06-17T06:49:50.050","status":"Modified","description":"A flaw was found in libssh. By utilizing the ProxyCommand or ProxyJump feature, users can exploit unchecked hostname syntax on the client. This issue may allow an attacker to inject malicious code into the command of the features mentioned through the hostname parameter.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L","score":4.8},"cwes":["CWE-74"],"references":["https://access.redhat.com/errata/RHSA-2024:2504","https://access.redhat.com/errata/RHSA-2024:3233","https://access.redhat.com/security/cve/CVE-2023-6004","https://bugzilla.redhat.com/show_bug.cgi?id=2251110","https://www.libssh.org/security/advisories/CVE-2023-6004.txt"],"products":["fedoraproject:fedora","libssh:libssh","redhat:enterprise_linux"],"source":"nvd","synced_at":"2026-10-19T21:43:38.875533635+00:00"},"epss":{"cve":"CVE-2023-6004","score":0.00449,"percentile":0.3905,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}