Security advisory

{
  "id": "9431b7ab917b3e481907ba35dedb408e33a4d7be0ad65d77780dd2b0574ff1a3",
  "url": "https://osv.dev/vulnerability/CVE-2021-31783",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "CVE-2021-31783",
    "summary": "show_default.php in the LocalFilesEditor extension before 11.4.0.1 for Piwigo allows Local File Inclusion because the file parameter is not validated with a proper regular-expression check.",
    "evidence": "osv:CVE-2021-31783",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2021-31783",
      "aliases": [
        "CVE-2021-31783"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/piwigo/localfileseditor",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "dda691d3e45bfd166ac175c70bd8b91cb4917b6b"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "fixed": "dda691d3e45bfd166ac175c70bd8b91cb4917b6b"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-31783.json"
          }
        }
      ],
      "modified": "2026-10-20T10:54:40.962976635Z",
      "provider": "osv",
      "references": [
        "https://piwigo.org/ext/index.php?cid=null",
        "https://github.com/Piwigo/LocalFilesEditor/issues/2",
        "https://github.com/Piwigo/LocalFilesEditor/commit/dda691d3e45bfd166ac175c70bd8b91cb4917b6b"
      ],
      "provider_metadata": {
        "unresolved_ranges": [
          {
            "cpes": [
              "cpe:2.3:a:piwigo:localfiles_editor:*:*:*:*:*:piwigo:*:*"
            ],
            "vendor_product": "piwigo:localfiles_editor",
            "extracted_events": [
              {
                "range": [
                  {
                    "fixed": "11.4.0.1"
                  }
                ],
                "source": "CPE_RANGE"
              }
            ]
          },
          {
            "extracted_events": [
              {
                "range": [
                  {
                    "fixed": "11.4.0.1"
                  }
                ],
                "source": "DESCRIPTION"
              }
            ]
          }
        ]
      }
    },
    "related_cves": [
      {
        "value": "CVE-2021-31783",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 385880,
  "published_at": "2021-04-26T19:15:08.583+00:00"
}