Samba: samba: remote code execution in printing subsystem via unescaped job description

{
  "id": "3d370cf658ae543f5cfac6d4965d690bfbd1fbbce8ac7034b20e6150ebcec7f9",
  "url": "https://osv.dev/vulnerability/CVE-2026-4480",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Samba: samba: remote code execution in printing subsystem via unescaped job description",
    "summary": "A flaw was found in the Samba printing subsystem. Samba passes the client-controlled job description string to the command configured with the \"print command\" setting via the \"%J\" substitution character without escaping shell meta characters. A remote attacker could exploit this vulnerability by sending a specially crafted print job description that contains unescaped shell characters. This could lead to remote code execution on the affected system.",
    "evidence": "osv:CVE-2026-4480",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2026-4480",
      "aliases": [
        "CVE-2026-4480"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/samba-team/samba",
              "type": "GIT",
              "events": [
                {
                  "introduced": "a6fb418be7adccdd583a3b489b58023cfdd392ef"
                },
                {
                  "fixed": "c2633a95a88f5f777fc94a25a07f1faa47420fc5"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:samba:samba:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "4.1.0"
                      },
                      {
                        "fixed": "4.2.1"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-4480.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:23.364771506Z",
      "provider": "osv",
      "references": [
        "https://access.redhat.com/downloads/content/package-browser/",
        "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4480.json",
        "https://access.redhat.com/errata/RHSA-2026:22644",
        "https://access.redhat.com/errata/RHSA-2026:22963",
        "https://access.redhat.com/errata/RHSA-2026:25049",
        "https://access.redhat.com/errata/RHSA-2026:25979",
        "https://access.redhat.com/errata/RHSA-2026:28053",
        "https://access.redhat.com/errata/RHSA-2026:28054",
        "https://access.redhat.com/errata/RHSA-2026:28055",
        "https://access.redhat.com/errata/RHSA-2026:28056",
        "https://access.redhat.com/errata/RHSA-2026:28057",
        "https://access.redhat.com/errata/RHSA-2026:28058",
        "https://access.redhat.com/errata/RHSA-2026:28132",
        "https://access.redhat.com/security/cve/CVE-2026-4480",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/4xxx/CVE-2026-4480.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-4480",
        "https://bugzilla.redhat.com/show_bug.cgi?id=2452232",
        "https://bugzilla.samba.org/show_bug.cgi?id=16033"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-78"
        ],
        "cna_assigner": "redhat",
        "unresolved_ranges": [
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "fixed": "0:4.23.5-109.el10_2"
                  },
                  {
                    "fixed": "0:4.21.3-114.el10_0.1"
                  },
                  {
                    "fixed": "0:4.10.16-26.el7_9.1"
                  },
                  {
                    "fixed": "0:4.10.16-26.el7_9.1"
                  },
                  {
                    "fixed": "0:4.19.4-16.el8_10"
                  },
                  {
                    "fixed": "0:4.19.4-16.el8_10"
                  },
                  {
                    "fixed": "0:4.13.3-12.el8_4.1"
                  },
                  {
                    "fixed": "0:4.13.3-12.el8_4.1"
                  },
                  {
                    "fixed": "0:4.15.5-16.el8_6.1"
                  },
                  {
                    "fixed": "0:4.15.5-16.el8_6.1"
                  },
                  {
                    "fixed": "0:4.17.5-7.el8_8.1"
                  },
                  {
                    "fixed": "0:4.17.5-7.el8_8.1"
                  },
                  {
                    "fixed": "0:4.23.5-10.el9_8"
                  },
                  {
                    "fixed": "0:4.23.5-10.el9_8"
                  },
                  {
                    "fixed": "0:4.17.5-105.el9_2.5"
                  },
                  {
                    "fixed": "0:4.19.4-105.el9_4.4"
                  },
                  {
                    "fixed": "0:4.21.3-14.el9_6.1"
                  }
                ],
                "source": "AFFECTED_FIELD",
                "strategy": "InverseAffectedRanges"
              }
            ]
          }
        ],
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/4xxx/CVE-2026-4480.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-4480",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 489795,
  "published_at": "2026-05-26T13:56:32.355+00:00"
}