Security advisory

{
  "id": "e8b22a09db6f832c02e3cc3aadeacfcb848efb3916f22443bcda19974a021ef6",
  "url": "https://osv.dev/vulnerability/CVE-2021-40886",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-40886",
    "summary": "Projectsend version r1295 is affected by a directory traversal vulnerability. A user with Uploader role can add value `2` for `chunks` parameter to bypass `fileName` sanitization.",
    "evidence": "osv:CVE-2021-40886",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2021-40886",
      "aliases": [
        "CVE-2021-40886"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/projectsend/projectsend",
              "type": "GIT",
              "events": [
                {
                  "introduced": "1ec836a08d8c71d1347cc08552ee7b3bd218f21f"
                },
                {
                  "last_affected": "1ec836a08d8c71d1347cc08552ee7b3bd218f21f"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "cpe": "cpe:2.3:a:projectsend:projectsend:r1295:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "r1295"
                      },
                      {
                        "last_affected": "r1295"
                      }
                    ],
                    "source": "CPE_STRING"
                  }
                ]
              }
            }
          ],
          "versions": [
            "r1295"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-40886.json"
          }
        }
      ],
      "modified": "2026-10-20T10:54:56.650389985Z",
      "provider": "osv",
      "references": [
        "https://github.com/projectsend/projectsend/issues/993"
      ],
      "provider_metadata": {}
    },
    "related_cves": [
      {
        "value": "CVE-2021-40886",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 386501,
  "published_at": "2021-10-11T11:15:09.59+00:00"
}