Vulnerability-Lookup

GHSA-5VPG-RJ7Q-QPW2

Vulnerability from github – Published: 2026-05-11 19:34 – Updated: 2026-06-08 20:14

Summary

Yii 2: Local file inclusion via view parameter name collision

Details

The core view rendering method View::renderPhpFile() calls extract($_params_, EXTR_OVERWRITE) before the require statement that includes the view file. A caller-controlled parameter named _file_ in the $params array overwrites the internal local variable that specifies which file is included — enabling a Local File Inclusion primitive.

Impact

Local File Inclusion (arbitrary file read via non-PHP files)
Potential RCE if attacker can write PHP files via a separate primitive
Information disclosure

Patches

2.0.55

Workarounds

No.

Severity

7.4 (High)


                  
                    CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

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{
  "affected": [
    {
      "package": {
        "ecosystem": "Packagist",
        "name": "yiisoft/yii2"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "2.0.55"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "aliases": [
    "CVE-2026-39850"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-20",
      "CWE-98"
    ],
    "github_reviewed": true,
    "github_reviewed_at": "2026-05-11T19:34:28Z",
    "nvd_published_at": "2026-05-20T20:16:39Z",
    "severity": "HIGH"
  },
  "details": "The core view rendering method `View::renderPhpFile()` calls `extract($_params_, EXTR_OVERWRITE)` before the `require` statement that includes the view file. A caller-controlled parameter named `_file_` in the `$params` array overwrites the internal local variable that specifies which file is included \u2014 enabling a Local File Inclusion primitive.\n\n### Impact\n\n- Local File Inclusion (arbitrary file read via non-PHP files)\n- Potential RCE if attacker can write PHP files via a separate primitive\n- Information disclosure\n\n### Patches\n\n2.0.55\n\n### Workarounds\n\nNo.",
  "id": "GHSA-5vpg-rj7q-qpw2",
  "modified": "2026-06-08T20:14:36Z",
  "published": "2026-05-11T19:34:28Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://github.com/yiisoft/yii2/security/advisories/GHSA-5vpg-rj7q-qpw2"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-39850"
    },
    {
      "type": "WEB",
      "url": "https://github.com/yiisoft/yii2/commit/109878b491dbffa541032bc99fb5e26d12cd0375"
    },
    {
      "type": "PACKAGE",
      "url": "https://github.com/yiisoft/yii2"
    },
    {
      "type": "WEB",
      "url": "https://github.com/yiisoft/yii2/releases/tag/2.0.55"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Yii 2: Local file inclusion via view parameter name collision"
}

CVE-2026-39850 (GCVE-0-2026-39850)

Vulnerability from cvelistv5 – Published: 2026-05-20 19:51 – Updated: 2026-05-21 13:03

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.

Severity

7.4 (High)


                        
                          CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-05-21 03:55 UTC

CWE

CWE-20 - Improper Input Validation
CWE-98 - Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion')

Assigner

GitHub_M mitre root

References

2 references

URL	Tags
https://github.com/yiisoft/yii2/security/advisori…	x_refsource_CONFIRM
https://github.com/yiisoft/yii2/commit/109878b491…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
yiisoft	yii2	Affected: < 2.0.55

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JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-39850",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-21T03:55:53.898116Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-21T13:03:41.018Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "yii2",
          "vendor": "yiisoft",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c 2.0.55"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "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."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 7.4,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-20",
              "description": "CWE-20: Improper Input Validation",
              "lang": "en",
              "type": "CWE"
            }
          ]
        },
        {
          "descriptions": [
            {
              "cweId": "CWE-98",
              "description": "CWE-98: Improper Control of Filename for Include/Require Statement in PHP Program (\u0027PHP Remote File Inclusion\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-20T19:51:03.769Z",
        "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "shortName": "GitHub_M"
      },
      "references": [
        {
          "name": "https://github.com/yiisoft/yii2/security/advisories/GHSA-5vpg-rj7q-qpw2",
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://github.com/yiisoft/yii2/security/advisories/GHSA-5vpg-rj7q-qpw2"
        },
        {
          "name": "https://github.com/yiisoft/yii2/commit/109878b491dbffa541032bc99fb5e26d12cd0375",
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://github.com/yiisoft/yii2/commit/109878b491dbffa541032bc99fb5e26d12cd0375"
        }
      ],
      "source": {
        "advisory": "GHSA-5vpg-rj7q-qpw2",
        "discovery": "UNKNOWN"
      },
      "title": "Yii 2: Local file inclusion via view parameter name collision"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-39850",
    "datePublished": "2026-05-20T19:51:03.769Z",
    "dateReserved": "2026-04-07T19:13:20.378Z",
    "dateUpdated": "2026-05-21T13:03:41.018Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.