Twig: Sandbox property and method bypass via object-destructuring assignment

{
  "id": "8e714dc2c4afcf5953e2ab94ae24869b07d021cf596e0282fe31c09f97e57942",
  "url": "https://osv.dev/vulnerability/CVE-2026-46639",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Twig: Sandbox property and method bypass via object-destructuring assignment",
    "summary": "Twig is a template language for PHP. From 3.24.0 until 3.26.0, object-destructuring assignment compiles CoreExtension::getAttribute() with the sandbox argument hardcoded to false, disabling property and method policy checks and allowing an attacker with write access to a sandboxed Twig template to read public properties or invoke public getters on objects passed to the template engine. This issue is fixed in version 3.26.0.",
    "evidence": "osv:CVE-2026-46639",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-46639",
      "aliases": [
        "CVE-2026-46639",
        "GHSA-mm6w-gr99-p3jj"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/twigphp/twig",
              "type": "GIT",
              "events": [
                {
                  "introduced": "a6769aefb305efef849dc25c9fd1653358c148f0"
                },
                {
                  "fixed": "1fcae487b180d78e6351f4e0afa91f9eab96a2bc"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "3.24.0"
                      },
                      {
                        "fixed": "3.26.0"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "fixed": "1fcae487b180d78e6351f4e0afa91f9eab96a2bc"
                      }
                    ],
                    "source": "REFERENCES_TAG",
                    "original_tag": "v3.26.0"
                  },
                  {
                    "cpe": "cpe:2.3:a:symfony:twig:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "3.24.0"
                      },
                      {
                        "fixed": "3.26.0"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v3.25.0",
            "v3.24.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-46639.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:49.990147275Z",
      "provider": "osv",
      "references": [
        "https://github.com/twigphp/Twig/releases/tag/v3.26.0",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46639.json",
        "https://github.com/twigphp/Twig/security/advisories/GHSA-mm6w-gr99-p3jj",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-46639"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-693"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46639.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-46639",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 518556,
  "published_at": "2026-07-14T21:13:42.321+00:00"
}