Vulnerability from drupal
Published
2026-07-29 17:08
Modified
2026-07-29 17:08
Summary
Details

The Token Content Access module enables site administrators to provide access to content using access tokens.

The module does not sufficiently protect access token comparison in some cases. This could allow a persistent attacker to use a timing attack to guess a valid access token and bypass access restrictions for content protected by this module.

This vulnerability is mitigated by the fact that an attacker must know or discover a URL for content protected by Token Content Access, and exploiting the issue requires measuring timing differences in token comparison responses.

Credits
Robin (robincs) www.drupal.org/u/robincs
References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "affected_versions": "\u003c3.1.2"
      },
      "package": {
        "ecosystem": "Packagist:https://packages.drupal.org/8",
        "name": "drupal/tca"
      },
      "ranges": [
        {
          "database_specific": {
            "constraint": "\u003c3.1.2"
          },
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "3.1.2"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "severity": []
    }
  ],
  "aliases": [
    "CVE-2026-18259"
  ],
  "credits": [
    {
      "contact": [
        "https://www.drupal.org/u/robincs"
      ],
      "name": "Robin  (robincs)"
    }
  ],
  "details": "The Token Content Access module enables site administrators to provide access to content using access tokens.\n\nThe module does not sufficiently protect access token comparison in some cases. This could allow a persistent attacker to use a timing attack to guess a valid access token and bypass access restrictions for content protected by this module.\n\nThis vulnerability is mitigated by the fact that an attacker must know or discover a URL for content protected by Token Content Access, and exploiting the issue requires measuring timing differences in token comparison responses.",
  "id": "DRUPAL-CONTRIB-2026-090",
  "modified": "2026-07-29T17:08:33.000Z",
  "published": "2026-07-29T17:08:33.000Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://www.drupal.org/sa-contrib-2026-090"
    }
  ],
  "schema_version": "1.7.0"
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





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.


Detection rules are retrieved from Rulezet.