drupal-contrib-2026-309

osv_packagist
Description

The Extended HTML Filter module allows using style attributes in CKEditor. The module XSS filter does not sufficiently sanitize certain HTMX attributes, which can lead to a cross-site scripting (XSS) vulnerability. The vulnerability is mitigated by the fact an attacker must be able to insert HTML with specific attributes.

Timeline
Published
unknown
Last Modified
unknown
CVSS Details

CVSS details not available.

Affected Products

No product information available.

References
Linked Vulnerabilities

No linked vulnerabilities found.

{
  "affected": [
    {
      "database_specific": {
        "affected_versions": "<1.0.4",
        "source": "https://github.com/DrupalSecurityTeam/drupal-advisory-database/blob/main/advisories/extended_html_filter/DRUPAL-CONTRIB-2026-309.json"
      },
      "package": {
        "ecosystem": "Packagist:https://packages.drupal.org/8",
        "name": "drupal/extended_html_filter",
        "purl": "pkg:composer/drupal/extended_html_filter?repository_url=https:%2F%2Fpackages.drupal.org%2F8"
      },
      "ranges": [
        {
          "database_specific": {
            "constraint": "<1.0.4"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.0.4"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-122078"
  ],
  "credits": [
    {
      "contact": [
        "https://www.drupal.org/u/prudloff"
      ],
      "name": "Pierre Rudloff (prudloff)"
    }
  ],
  "details": "The Extended HTML Filter module allows using style attributes in CKEditor.\n\nThe module XSS filter does not sufficiently sanitize certain HTMX attributes, which can lead to a cross-site scripting (XSS) vulnerability.\n\nThe vulnerability is mitigated by the fact an attacker must be able to insert HTML with specific attributes.",
  "id": "DRUPAL-CONTRIB-2026-309",
  "modified": "2026-11-04T20:30:04.243187057Z",
  "published": "2026-11-04T17:51:04Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://www.drupal.org/sa-contrib-2026-309"
    }
  ],
  "schema_version": "1.9.2"
}
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