Camaleon CMS AWS Uploader Authenticated Path Traversal Arbitrary File Read

{
  "id": "c797129c0a7db40cf25d3b825887fb8ddfbf90615de6618f778050e865ca93f8",
  "url": "https://osv.dev/vulnerability/CVE-2026-1776",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Camaleon CMS AWS Uploader Authenticated Path Traversal Arbitrary File Read",
    "summary": "Camaleon CMS versions 2.4.5.0 through 2.9.0, prior to commit f54a77e, contain a path traversal vulnerability in the AWS S3 uploader implementation that allows authenticated users to read arbitrary files from the web server’s filesystem. The issue occurs in the download_private_file functionality when the application is configured to use the CamaleonCmsAwsUploader backend. Unlike the local uploader implementation, the AWS uploader does not validate file paths with valid_folder_path?, allowing directory traversal sequences to be supplied via the file parameter. As a result, any authenticated user, including low-privileged registered users, can access sensitive files such as /etc/passwd. This issue represents a bypass of the incomplete fix for CVE-2024-46987 and affects deployments using the AWS S3 storage backend.",
    "evidence": "osv:CVE-2026-1776",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-1776",
      "aliases": [
        "CVE-2026-1776",
        "GHSA-jw5g-f64p-6x78"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/owen2345/camaleon-cms",
              "type": "GIT",
              "events": [
                {
                  "introduced": "29faf0a01d37a9fac1e7d64ed51b1d324739fcaa"
                },
                {
                  "fixed": "f54a77e2a7be601215ea1b396038c589a0cab9af"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:tuzitio:camaleon_cms:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "2.4.5"
                      },
                      {
                        "last_affected": "2.9.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  },
                  {
                    "range": [
                      {
                        "fixed": "f54a77e2a7be601215ea1b396038c589a0cab9af"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "2.9.1",
            "2.9.0",
            "2.8.3",
            "2.8.2",
            "2.8.1",
            "2.8.0",
            "2.7.5",
            "2.7.4",
            "2.7.3",
            "2.7.1",
            "2.7.0",
            "2.6.4",
            "2.6.2",
            "2.6.1",
            "2.6.0.1",
            "2.6.0",
            "2.5.3.1",
            "2.5.3",
            "2.5.1",
            "2.4.6.7",
            "2.4.6.1",
            "2.4.6.0",
            "2.4.5.14",
            "2.4.5.13",
            "2.4.5.12",
            "camaleon_cms-2.4.5.11.gem",
            "2.4.5.11",
            "2.4.5.10",
            "2.4.5.7",
            "2.4.5.1",
            "2.4.5"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-1776.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:30.618793273Z",
      "provider": "osv",
      "references": [
        "https://camaleon.website/",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/1xxx/CVE-2026-1776.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-1776",
        "https://www.vulncheck.com/advisories/camaleon-cms-aws-uploader-authenticated-path-traversal-arbitrary-file-read",
        "https://github.com/owen2345/camaleon-cms/pull/1127",
        "https://github.com/owen2345/camaleon-cms/commit/f54a77e2a7be601215ea1b396038c589a0cab9af",
        "https://github.com/owen2345/camaleon-cms"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-22"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/1xxx/CVE-2026-1776.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-1776",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 497510,
  "published_at": "2026-03-09T21:08:06.6+00:00"
}