Yii 2: Local file inclusion via view parameter name collision

{
  "id": "accd6f2e0acdf5c1b83c7646e067d4cba1424e2ae3db74cf6d6edb89fb847a23",
  "url": "https://osv.dev/vulnerability/CVE-2026-39850",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Yii 2: Local file inclusion via view parameter name collision",
    "summary": "Yii 2 is a PHP application framework. Versions 2.0.54 and prior contain flawed logic in the core view rendering method View::renderPhpFile() that leads to Local File Inclusion. The function calls extract($_params_, EXTR_OVERWRITE) before the require statement that loads the view file. As a result, a caller-controlled _file_ key in the $params array overwrites the internal local variable specifying which file to include, potentially enabling RCE if an attacker can write PHP files through a separate primitive, as well as information disclosure. This issue has been fixed in version 2.0.55.",
    "evidence": "osv:CVE-2026-39850",
    "products": [],
    "severity": "high",
    "structured": {
      "id": "CVE-2026-39850",
      "aliases": [
        "CVE-2026-39850",
        "GHSA-5vpg-rj7q-qpw2"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/yiisoft/yii2",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "babee66def599432735a1ed39c9cf0bc5163a775"
                },
                {
                  "fixed": "109878b491dbffa541032bc99fb5e26d12cd0375"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "fixed": "2.0.55"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "range": [
                      {
                        "fixed": "109878b491dbffa541032bc99fb5e26d12cd0375"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "2.0.54",
            "2.0.53",
            "2.0.52",
            "2.0.51",
            "2.0.50",
            "2.0.49.2",
            "2.0.49.1",
            "2.0.49",
            "2.0.48.1",
            "2.0.48",
            "2.0.47",
            "2.0.46",
            "2.0.45",
            "2.0.44",
            "2.0.43",
            "2.0.42.1",
            "2.0.42",
            "2.0.41.1",
            "2.0.41",
            "2.0.40",
            "2.0.39.3",
            "2.0.39.2",
            "2.0.39.1",
            "2.0.39",
            "2.0.38",
            "2.0.37",
            "2.0.36",
            "2.0.35",
            "2.0.34",
            "2.0.33",
            "2.0.32",
            "2.0.31",
            "2.0.30",
            "2.0.29",
            "2.0.28",
            "2.0.27",
            "2.0.26",
            "2.0.25",
            "2.0.24",
            "2.0.23",
            "2.0.22",
            "2.0.21",
            "2.0.20",
            "2.0.19",
            "2.0.18",
            "2.0.17",
            "2.0.16.1",
            "2.0.16",
            "2.0.12",
            "2.0.13.1",
            "2.0.14.2",
            "2.0.14.1",
            "2.0.14",
            "2.0.13",
            "2.0.11.2",
            "2.0.11.1",
            "2.0.11",
            "2.0.10",
            "2.0.9",
            "2.0.8",
            "2.0.7",
            "2.0.6",
            "2.0.4",
            "2.0.3",
            "2.0.2",
            "2.0.0-rc",
            "2.0.0-beta",
            "2.0.0-alpha"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-39850.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:46.319839387Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/39xxx/CVE-2026-39850.json",
        "https://github.com/yiisoft/yii2/security/advisories/GHSA-5vpg-rj7q-qpw2",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-39850",
        "https://github.com/yiisoft/yii2/commit/109878b491dbffa541032bc99fb5e26d12cd0375"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-20",
          "CWE-98"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/39xxx/CVE-2026-39850.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-39850",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 514206,
  "published_at": "2026-05-20T19:51:03.769+00:00"
}