Security advisory

{
  "id": "4b4c119a74131b58f178fbef4f573c06160143acd53d0b381f6530df43e6abe7",
  "url": "https://osv.dev/vulnerability/CVE-2023-48648",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2023-48648",
    "summary": "Concrete CMS before 8.5.13 and 9.x before 9.2.2 allows unauthorized access because directories can be created with insecure permissions. File creation functions (such as the Mkdir() function) gives universal access (0777) to created folders by default. Excessive permissions can be granted when creating a directory with permissions greater than 0755 or when the permissions argument is not specified.",
    "evidence": "osv:CVE-2023-48648",
    "products": [],
    "severity": "critical",
    "structured": {
      "id": "CVE-2023-48648",
      "aliases": [
        "CVE-2023-48648",
        "GHSA-m87h-jxr6-f82w"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/concretecms/concretecms",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "eb803ab1add2d5cd26b7b6fc7d09e931f60e9614"
                },
                {
                  "introduced": "b3774abddd475b4ba98b637402506f7a5ebd90ea"
                },
                {
                  "fixed": "2d83929752cb641f5b18e8a68aa829433e696361"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:concretecms:concrete_cms:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "8.5.13"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "cpe": "cpe:2.3:a:concretecms:concrete_cms:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "9.0"
                      },
                      {
                        "fixed": "9.2.2"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "8.5.9",
            "8.5.7",
            "8.5.6",
            "8.4.1",
            "8.3.1",
            "8.2.1",
            "8.2.0",
            "8.2.0RC2",
            "8.1.0",
            "5.7.5.7",
            "5.7.5.6",
            "5.7.5.5",
            "5.7.5.2",
            "5.7.4.1",
            "5.7.3.1",
            "5.7.3",
            "5.7.2.1",
            "5.7.2",
            "5.7.0.4",
            "5.7.1",
            "5.7.0.3",
            "5.7.0.1",
            "5.7.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-48648.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:36.590527735Z",
      "provider": "osv",
      "references": [
        "https://documentation.concretecms.org/developers/introduction/version-history/8513-release-notes",
        "https://documentation.concretecms.org/developers/introduction/version-history/922-release-notes",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/48xxx/CVE-2023-48648.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-48648",
        "https://www.concretecms.org/about/project-news/security/2023-11-09-security-blog-about-updated-cves-and-new-release"
      ],
      "provider_metadata": {
        "cna_assigner": "mitre",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/48xxx/CVE-2023-48648.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-48648",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 503943,
  "published_at": "2023-11-17T00:00:00+00:00"
}