Craft CMS before 4.18.8 and 5.11.0 Twig Sandbox Allowlist Bypass via Array Filters

{
  "id": "68db7f2d2ad42700ced7fc5c048f4e157026f13d92a0826862aa5d460eb3dc16",
  "url": "https://osv.dev/vulnerability/CVE-2026-112771",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Craft CMS before 4.18.8 and 5.11.0 Twig Sandbox Allowlist Bypass via Array Filters",
    "summary": "Craft CMS 4.0.0 before 4.18.8 and 5.0.0 before 5.11.0 contains a Twig sandbox allowlist bypass because the column, contains, filterByValue, index, where, and multisort filters resolve caller-supplied keys via ArrayHelper::getValue() without consulting the sandbox security policy. Authenticated Control Panel users can supply dot-path keys to traverse the craft global and disclose the securityKey, database credentials, and auth tokens.",
    "evidence": "osv:CVE-2026-112771",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-112771",
      "aliases": [
        "CVE-2026-112771",
        "GHSA-j697-8x93-7mp2"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/craftcms/cms",
              "type": "GIT",
              "events": [
                {
                  "introduced": "982efcd14d7e93a1a54f0905b61f242de6b53d8a"
                },
                {
                  "fixed": "feda70e264a9330919bea9eb607148198135afd4"
                },
                {
                  "introduced": "f6a8fb685d44e387435825e3a96809eeda4973a6"
                },
                {
                  "fixed": "2255717bfd5cc502751601aa68bf72eea035cd47"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "4.0.0"
                      },
                      {
                        "fixed": "4.18.8"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "introduced": "5.0.0"
                      },
                      {
                        "fixed": "5.11.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  }
                ]
              }
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-112771.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:22.597645082Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/112xxx/CVE-2026-112771.json",
        "https://github.com/craftcms/cms/security/advisories/GHSA-j697-8x93-7mp2",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-112771",
        "https://www.vulncheck.com/advisories/craft-cms-before-4.18.8-and-5.11.0-twig-sandbox-allowlist-bypass-via-array-filters"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-200"
        ],
        "cna_assigner": "VulnCheck",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/112xxx/CVE-2026-112771.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-112771",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 488867,
  "published_at": "2026-10-19T19:10:50.47+00:00"
}