Vulnerability-Lookup

CNVD-2026-41233

Vulnerability from cnvd - Published: 2026-10-16

Title

WordPress CMB2跨站脚本漏洞

Description

WordPress CMB2是WordPress开发者的工具包，用于快速构建‌自定义字段（MetaBoxes）、元框和表单‌。 WordPress CMB2存在跨站脚本漏洞，该漏洞源于file_list字段类型的输入清理和输出转义不足，攻击者可利用该漏洞向页面注入恶意脚本，当用户访问时执行。

Severity

中

Patch Name

WordPress CMB2跨站脚本漏洞的补丁

Patch Description

WordPress CMB2是WordPress开发者的工具包，用于快速构建‌自定义字段（MetaBoxes）、元框和表单‌。 WordPress CMB2存在跨站脚本漏洞，该漏洞源于file_list字段类型的输入清理和输出转义不足，攻击者可利用该漏洞向页面注入恶意脚本，当用户访问时执行。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description

目前厂商已发布升级程序修复该安全问题，详情见厂商官网: https://wordpress.org/plugins/cmb2/

Reference

https://www.wordfence.com/threat-intel/vulnerabilities/id/2d61a1f1-137e-4856-b5ff-b100143a8b47?source=cve https://plugins.trac.wordpress.org/browser/cmb2/tags/2.13.0/includes/CMB2_Utils.php#L690 https://plugins.trac.wordpress.org/browser/cmb2/tags/2.13.0/includes/types/CMB2_Type_File_List.php#L51 https://plugins.trac.wordpress.org/browser/cmb2/tags/2.13.0/includes/CMB2_Field.php#L617 https://plugins.trac.wordpress.org/browser/cmb2/tags/2.13.0/includes/CMB2_Field.php#L748 https://plugins.trac.wordpress.org/browser/cmb2/tags/2.13.0/includes/CMB2_Sanitize.php#L100 https://plugins.trac.wordpress.org/browser/cmb2/tags/2.13.0/includes/helper-functions.php#L320 https://plugins.trac.wordpress.org/browser/cmb2/tags/2.13.0/includes/CMB2_Hookup.php#L953 https://plugins.trac.wordpress.org/changeset?reponame=&old=3712103%40cmb2&new=3712103%40cmb2

Impacted products

Name
WordPress CMB2 <=2.13.0

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2026-97336",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2026-97336"
    }
  },
  "description": "WordPress CMB2\u662fWordPress\u5f00\u53d1\u8005\u7684\u5de5\u5177\u5305\uff0c\u7528\u4e8e\u5feb\u901f\u6784\u5efa\u200c\u81ea\u5b9a\u4e49\u5b57\u6bb5\uff08MetaBoxes\uff09\u3001\u5143\u6846\u548c\u8868\u5355\u200c\u3002\n\nWordPress CMB2\u5b58\u5728\u8de8\u7ad9\u811a\u672c\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8efile_list\u5b57\u6bb5\u7c7b\u578b\u7684\u8f93\u5165\u6e05\u7406\u548c\u8f93\u51fa\u8f6c\u4e49\u4e0d\u8db3\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5411\u9875\u9762\u6ce8\u5165\u6076\u610f\u811a\u672c\uff0c\u5f53\u7528\u6237\u8bbf\u95ee\u65f6\u6267\u884c\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u7a0b\u5e8f\u4fee\u590d\u8be5\u5b89\u5168\u95ee\u9898\uff0c\u8be6\u60c5\u89c1\u5382\u5546\u5b98\u7f51:\r\nhttps://wordpress.org/plugins/cmb2/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2026-41233",
  "openTime": "2026-10-16",
  "patchDescription": "WordPress CMB2\u662fWordPress\u5f00\u53d1\u8005\u7684\u5de5\u5177\u5305\uff0c\u7528\u4e8e\u5feb\u901f\u6784\u5efa\u200c\u81ea\u5b9a\u4e49\u5b57\u6bb5\uff08MetaBoxes\uff09\u3001\u5143\u6846\u548c\u8868\u5355\u200c\u3002\r\n\r\nWordPress CMB2\u5b58\u5728\u8de8\u7ad9\u811a\u672c\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8efile_list\u5b57\u6bb5\u7c7b\u578b\u7684\u8f93\u5165\u6e05\u7406\u548c\u8f93\u51fa\u8f6c\u4e49\u4e0d\u8db3\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5411\u9875\u9762\u6ce8\u5165\u6076\u610f\u811a\u672c\uff0c\u5f53\u7528\u6237\u8bbf\u95ee\u65f6\u6267\u884c\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "WordPress CMB2\u8de8\u7ad9\u811a\u672c\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "WordPress CMB2 \u003c=2.13.0"
  },
  "referenceLink": "https://www.wordfence.com/threat-intel/vulnerabilities/id/2d61a1f1-137e-4856-b5ff-b100143a8b47?source=cve\r\nhttps://plugins.trac.wordpress.org/browser/cmb2/tags/2.13.0/includes/CMB2_Utils.php#L690\r\nhttps://plugins.trac.wordpress.org/browser/cmb2/tags/2.13.0/includes/types/CMB2_Type_File_List.php#L51\r\nhttps://plugins.trac.wordpress.org/browser/cmb2/tags/2.13.0/includes/CMB2_Field.php#L617\r\nhttps://plugins.trac.wordpress.org/browser/cmb2/tags/2.13.0/includes/CMB2_Field.php#L748\r\nhttps://plugins.trac.wordpress.org/browser/cmb2/tags/2.13.0/includes/CMB2_Sanitize.php#L100\r\nhttps://plugins.trac.wordpress.org/browser/cmb2/tags/2.13.0/includes/helper-functions.php#L320\r\nhttps://plugins.trac.wordpress.org/browser/cmb2/tags/2.13.0/includes/CMB2_Hookup.php#L953\r\nhttps://plugins.trac.wordpress.org/changeset?reponame=\u0026old=3712103%40cmb2\u0026new=3712103%40cmb2",
  "serverity": "\u4e2d",
  "submitTime": "2026-10-13",
  "title": "WordPress CMB2\u8de8\u7ad9\u811a\u672c\u6f0f\u6d1e"
}

CVE-2026-97336 (GCVE-0-2026-97336)

Vulnerability from cvelistv5 – Published: 2026-10-02 07:39 – Updated: 2026-10-02 17:59

Title

CMB2 <= 2.13.0 - Unauthenticated Stored Cross-Site Scripting via 'file_list' Field Type

Summary

The CMB2 plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'file_list' Field Type in all versions up to, and including, 2.13.0 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This is only exploitable when an integrating plugin or theme registers a file_list field on a publicly accessible front-end form or a user meta box, as CMB2 is a developer library and does not expose these fields by default.

Severity

7.2 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-10-02 17:59 UTC

CWE

CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Assigner

Wordfence CNA under the mitre root

CNA scorecard C 65/100 over 2250 records in the last 180 days details

References

9 references

URL	Tags
https://www.wordfence.com/threat-intel/vulnerabil…
https://plugins.trac.wordpress.org/browser/cmb2/t…
https://plugins.trac.wordpress.org/browser/cmb2/t…
https://plugins.trac.wordpress.org/browser/cmb2/t…
https://plugins.trac.wordpress.org/browser/cmb2/t…
https://plugins.trac.wordpress.org/browser/cmb2/t…
https://plugins.trac.wordpress.org/browser/cmb2/t…
https://plugins.trac.wordpress.org/browser/cmb2/t…
https://plugins.trac.wordpress.org/changeset?repo…

Impacted products

1 product

Vendor	Product	Version
jtsternberg	CMB2	Affected: 0 , ≤ 2.13.0 (semver)

Credits

Ivaylo

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-97336",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-10-02T17:59:20.492694Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-10-02T17:59:33.336Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "CMB2",
          "vendor": "jtsternberg",
          "versions": [
            {
              "lessThanOrEqual": "2.13.0",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Ivaylo"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "The CMB2 plugin for WordPress is vulnerable to Stored Cross-Site Scripting via \u0027file_list\u0027 Field Type in all versions up to, and including, 2.13.0 due to insufficient input sanitization and output escaping. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page. This is only exploitable when an integrating plugin or theme registers a file_list field on a publicly accessible front-end form or a user meta box, as CMB2 is a developer library and does not expose these fields by default."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.2,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-79",
              "description": "CWE-79 Improper Neutralization of Input During Web Page Generation (\u0027Cross-site Scripting\u0027)",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-02T07:39:22.150Z",
        "orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
        "shortName": "Wordfence"
      },
      "references": [
        {
          "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/2d61a1f1-137e-4856-b5ff-b100143a8b47?source=cve"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/cmb2/tags/2.13.0/includes/CMB2_Utils.php#L690"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/cmb2/tags/2.13.0/includes/types/CMB2_Type_File_List.php#L51"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/cmb2/tags/2.13.0/includes/CMB2_Field.php#L617"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/cmb2/tags/2.13.0/includes/CMB2_Field.php#L748"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/cmb2/tags/2.13.0/includes/CMB2_Sanitize.php#L100"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/cmb2/tags/2.13.0/includes/helper-functions.php#L320"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/cmb2/tags/2.13.0/includes/CMB2_Hookup.php#L953"
        },
        {
          "url": "https://plugins.trac.wordpress.org/changeset?reponame=\u0026old=3712103%40cmb2\u0026new=3712103%40cmb2"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-09-24T16:24:48.000Z",
          "value": "Vendor Notified"
        },
        {
          "lang": "en",
          "time": "2026-10-01T18:39:15.000Z",
          "value": "Disclosed"
        }
      ],
      "title": "CMB2 \u003c= 2.13.0 - Unauthenticated Stored Cross-Site Scripting via \u0027file_list\u0027 Field Type"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
    "assignerShortName": "Wordfence",
    "cveId": "CVE-2026-97336",
    "datePublished": "2026-10-02T07:39:22.150Z",
    "dateReserved": "2026-09-24T12:22:15.727Z",
    "dateUpdated": "2026-10-02T17:59:33.336Z",
    "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.

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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.

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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.

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