(CVE-2026-96365)

Vulnerability from drupal – Published: 2026-09-23 16:26 – Updated: 2026-09-23 16:46 – Source website
VLAI
Details

The Webform module allows site builders to create forms, collect submissions, and configure access to forms and submission data. Site builders may also configure handlers for processing submissions. Forms may be displayed in blocks.

Webform does not sufficiently validate an optional token query value before using it. Under specific configurations where a Webform is rendered for anonymous visitors, a malicious request can cause the request to consume significant resources leading to a Denial of Service.

Credits
Majdi Alomari (majdi) www.drupal.org/u/majdi
References
To clipboard 

{
  "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-2026-96365"
  ],
  "credits": [
    {
      "contact": [
        "https://www.drupal.org/u/majdi"
      ],
      "name": "Majdi Alomari (majdi)"
    }
  ],
  "details": "The Webform module allows site builders to create forms, collect submissions, and configure access to forms and submission data. Site builders may also configure handlers for processing submissions. Forms may be displayed in blocks.\n\nWebform does not sufficiently validate an optional token query value before using it. Under specific configurations where a Webform is rendered for anonymous visitors, a malicious request can cause the request to consume significant resources leading to a Denial of Service.",
  "id": "DRUPAL-CONTRIB-2026-170",
  "modified": "2026-09-23T16:46:34.000Z",
  "published": "2026-09-23T16:26:17.000Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://www.drupal.org/sa-contrib-2026-170"
    }
  ],
  "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

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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.



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.