(CVE-2026-96357)

Vulnerability from drupal – Published: 2026-09-23 16:26 – Updated: 2026-09-23 16:47 – Source website
VLAI
Details

The Webform module allows site builders to create forms, collect submissions, and configure access to forms and submission data. Form submissions may include uploaded files.

The module does not sufficiently force certain uploaded file types to download when served. Under certan site configurations, a file uploaded through a webform could be rendered inline by a browser, resulting in a cross-site scripting vulnerability.

This vulnerability is mitigated by the fact that a user with permission to create or edit webforms must configure the form to allow the affected file extensions, and a user must specifically open the uploaded file.


{
  "affected": [
    {
      "database_specific": {
        "affected_versions": "\u003c6.2.12 || \u003e=6.3.0 \u003c6.3.1"
      },
      "package": {
        "ecosystem": "Packagist:https://packages.drupal.org/8",
        "name": "drupal/webform"
      },
      "ranges": [
        {
          "database_specific": {
            "constraint": "\u003c6.2.12"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.2.12"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "database_specific": {
            "constraint": "\u003e=6.3.0 \u003c6.3.1"
          },
          "events": [
            {
              "introduced": "6.3.0"
            },
            {
              "fixed": "6.3.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "severity": []
    }
  ],
  "aliases": [
    "CVE-2026-96357"
  ],
  "credits": [
    {
      "contact": [
        "https://www.drupal.org/u/michaelmaturi"
      ],
      "name": "Michael Maturi (michaelmaturi)"
    }
  ],
  "details": "The Webform module allows site builders to create forms, collect submissions, and configure access to forms and submission data. Form submissions may include uploaded files.\n\nThe module does not sufficiently force certain uploaded file types to download when served. Under certan site configurations, a file uploaded through a webform could be rendered inline by a browser, resulting in a cross-site scripting vulnerability.\n\nThis vulnerability is mitigated by the fact that a user with permission to create or edit webforms must configure the form to allow the affected file extensions, and a user must specifically open the uploaded file.",
  "id": "DRUPAL-CONTRIB-2026-172",
  "modified": "2026-09-23T16:47:17.000Z",
  "published": "2026-09-23T16:26:49.000Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://www.drupal.org/sa-contrib-2026-172"
    }
  ],
  "schema_version": "1.7.0"
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.


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