(CVE-2026-58588)

Vulnerability from drupal – Published: 2026-07-01 17:21 – Updated: 2026-07-01 17:21 – Source website
VLAI
Details

The Canvas module allow you to upload image files via a custom API.

The validation rules check the file extension of the uploaded file but not the file MIME type. This may allow a malicious user to upload a file that is not an image.

Certain web-server configurations may serve the uploaded file with its actual MIME type rather than an image type. This may lead to cross-site scripting (XSS) or other unexpected behavior.

Credits
Christian López Espínola (penyaskito) www.drupal.org/u/penyaskito
References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "affected_versions": "\u003c1.4.2 || \u003e=1.5.0 \u003c1.5.2 || \u003e=1.6.0 \u003c1.6.1 || \u003e=1.7.0 \u003c1.7.1"
      },
      "package": {
        "ecosystem": "Packagist:https://packages.drupal.org/8",
        "name": "drupal/canvas"
      },
      "ranges": [
        {
          "database_specific": {
            "constraint": "\u003c1.4.2"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.4.2"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "database_specific": {
            "constraint": "\u003e=1.5.0 \u003c1.5.2"
          },
          "events": [
            {
              "introduced": "1.5.0"
            },
            {
              "fixed": "1.5.2"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "database_specific": {
            "constraint": "\u003e=1.6.0 \u003c1.6.1"
          },
          "events": [
            {
              "introduced": "1.6.0"
            },
            {
              "fixed": "1.6.1"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "database_specific": {
            "constraint": "\u003e=1.7.0 \u003c1.7.1"
          },
          "events": [
            {
              "introduced": "1.7.0"
            },
            {
              "fixed": "1.7.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "severity": []
    }
  ],
  "aliases": [
    "CVE-2026-58588"
  ],
  "credits": [
    {
      "contact": [
        "https://www.drupal.org/u/penyaskito"
      ],
      "name": "Christian L\u00f3pez Esp\u00ednola (penyaskito)"
    }
  ],
  "details": "The Canvas module allow you to upload image files via a custom API.\n\nThe validation rules check the file extension of the uploaded file but not the file MIME type. This may allow a malicious user to upload a file that is not an image.\n\nCertain web-server configurations may serve the uploaded file with its actual MIME type rather than an image type. This may lead to cross-site scripting (XSS) or other unexpected behavior.",
  "id": "DRUPAL-CONTRIB-2026-066",
  "modified": "2026-07-01T17:21:09.000Z",
  "published": "2026-07-01T17:21:09.000Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://www.drupal.org/sa-contrib-2026-066"
    }
  ],
  "schema_version": "1.7.0"
}



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