Key auth - Moderately critical - Access bypass - SA-CONTRIB-2026-138

{
  "id": "90103684cb0cdce7b2fc683ec9a5c4b1de918a9d28fdb1ef4cf531340ae989c8",
  "url": "https://osv.dev/vulnerability/CVE-2026-87940",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Key auth - Moderately critical - Access bypass - SA-CONTRIB-2026-138",
    "summary": "Use of Web Browser Cache Containing Sensitive Information vulnerability in Drupal Key auth allows Exploiting Incorrectly Configured Access Control Security Levels. This issue affects Key auth versions: from 0.0.0 to 2.2.4.",
    "evidence": "osv:CVE-2026-87940",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-87940",
      "aliases": [
        "CVE-2026-87940",
        "DRUPAL-CONTRIB-2026-138"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.drupalcode.org/project/key_auth",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "1812bbedcebab99075c5a8df37ff52c39d823a01"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0.0.0"
                      },
                      {
                        "fixed": "2.2.4"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  }
                ]
              }
            }
          ],
          "versions": [
            "2.2.3",
            "3.x-dev",
            "2.2.2",
            "2.2.1",
            "2.1.0",
            "2.0.1",
            "2.0.0",
            "8.x-1.1",
            "8.x-1.0",
            "8.x-1.0-beta1"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-87940.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:41.012576117Z",
      "provider": "osv",
      "references": [
        "https://git.drupalcode.org/project/key_auth",
        "https://www.drupal.org/project/key_auth",
        "https://www.drupal.org/sa-contrib-2026-138",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/87xxx/CVE-2026-87940.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-87940"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-525"
        ],
        "cna_assigner": "drupal",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/87xxx/CVE-2026-87940.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-87940",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 508747,
  "published_at": "2026-10-22T01:22:02.034+00:00"
}