Vulnerability-Lookup

CNVD-2026-32203

Vulnerability from cnvd - Published: 2026-08-17

Title

WordPress Formidable Digital Signatures文件删除漏洞

Description

WordPress Formidable Digital Signatures是指Formidable Forms插件的付费扩展功能（Signature Add-on）‌，允许在WordPress表单中嵌入可绘制电子签名字段，将手写签名保存为图像并关联提交数据。 WordPress Formidable Digital Signatures存在文件删除漏洞，该漏源于插件中的delete_file函数在处理文件删除请求时，未对用户通过item_meta[field_id][content]参数提供的文件名进行充分的路径验证和过滤，攻击者可利用该漏洞构造包含../等目录遍历序列的路径，绕过预期的目录限制，删除服务器上的任意文件。

Severity

高

Patch Name

WordPress Formidable Digital Signatures文件删除漏洞的补丁

Patch Description

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://www.wordfence.com/threat-intel/vulnerabilities/id/c9a5f8ca-7efc-401b-8a93-07fbe7204dce?source=cve

Reference

https://nvd.nist.gov/vuln/detail/CVE-2026-16230

Impacted products

Name
WordPress Formidable Digital Signatures <=3.0.6

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2026-16230",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2026-16230"
    }
  },
  "description": "WordPress Formidable Digital Signatures\u662f\u6307Formidable Forms\u63d2\u4ef6\u7684\u4ed8\u8d39\u6269\u5c55\u529f\u80fd\uff08Signature Add-on\uff09\u200c\uff0c\u5141\u8bb8\u5728WordPress\u8868\u5355\u4e2d\u5d4c\u5165\u53ef\u7ed8\u5236\u7535\u5b50\u7b7e\u540d\u5b57\u6bb5\uff0c\u5c06\u624b\u5199\u7b7e\u540d\u4fdd\u5b58\u4e3a\u56fe\u50cf\u5e76\u5173\u8054\u63d0\u4ea4\u6570\u636e\u3002\n\nWordPress Formidable Digital Signatures\u5b58\u5728\u6587\u4ef6\u5220\u9664\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6e90\u4e8e\u63d2\u4ef6\u4e2d\u7684delete_file\u51fd\u6570\u5728\u5904\u7406\u6587\u4ef6\u5220\u9664\u8bf7\u6c42\u65f6\uff0c\u672a\u5bf9\u7528\u6237\u901a\u8fc7item_meta[field_id][content]\u53c2\u6570\u63d0\u4f9b\u7684\u6587\u4ef6\u540d\u8fdb\u884c\u5145\u5206\u7684\u8def\u5f84\u9a8c\u8bc1\u548c\u8fc7\u6ee4\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u6784\u9020\u5305\u542b../\u7b49\u76ee\u5f55\u904d\u5386\u5e8f\u5217\u7684\u8def\u5f84\uff0c\u7ed5\u8fc7\u9884\u671f\u7684\u76ee\u5f55\u9650\u5236\uff0c\u5220\u9664\u670d\u52a1\u5668\u4e0a\u7684\u4efb\u610f\u6587\u4ef6\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://www.wordfence.com/threat-intel/vulnerabilities/id/c9a5f8ca-7efc-401b-8a93-07fbe7204dce?source=cve",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2026-32203",
  "openTime": "2026-08-17",
  "patchDescription": "WordPress Formidable Digital Signatures\u662f\u6307Formidable Forms\u63d2\u4ef6\u7684\u4ed8\u8d39\u6269\u5c55\u529f\u80fd\uff08Signature Add-on\uff09\u200c\uff0c\u5141\u8bb8\u5728WordPress\u8868\u5355\u4e2d\u5d4c\u5165\u53ef\u7ed8\u5236\u7535\u5b50\u7b7e\u540d\u5b57\u6bb5\uff0c\u5c06\u624b\u5199\u7b7e\u540d\u4fdd\u5b58\u4e3a\u56fe\u50cf\u5e76\u5173\u8054\u63d0\u4ea4\u6570\u636e\u3002\r\n\r\nWordPress Formidable Digital Signatures\u5b58\u5728\u6587\u4ef6\u5220\u9664\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6e90\u4e8e\u63d2\u4ef6\u4e2d\u7684delete_file\u51fd\u6570\u5728\u5904\u7406\u6587\u4ef6\u5220\u9664\u8bf7\u6c42\u65f6\uff0c\u672a\u5bf9\u7528\u6237\u901a\u8fc7item_meta[field_id][content]\u53c2\u6570\u63d0\u4f9b\u7684\u6587\u4ef6\u540d\u8fdb\u884c\u5145\u5206\u7684\u8def\u5f84\u9a8c\u8bc1\u548c\u8fc7\u6ee4\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u6784\u9020\u5305\u542b../\u7b49\u76ee\u5f55\u904d\u5386\u5e8f\u5217\u7684\u8def\u5f84\uff0c\u7ed5\u8fc7\u9884\u671f\u7684\u76ee\u5f55\u9650\u5236\uff0c\u5220\u9664\u670d\u52a1\u5668\u4e0a\u7684\u4efb\u610f\u6587\u4ef6\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 Formidable Digital Signatures\u6587\u4ef6\u5220\u9664\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "WordPress Formidable Digital Signatures \u003c=3.0.6"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2026-16230",
  "serverity": "\u9ad8",
  "submitTime": "2026-08-14",
  "title": "WordPress Formidable Digital Signatures\u6587\u4ef6\u5220\u9664\u6f0f\u6d1e"
}

CVE-2026-16230 (GCVE-0-2026-16230)

Vulnerability from cvelistv5 – Published: 2026-08-11 19:37 – Updated: 2026-08-11 21:03

Title

Formidable Digital Signatures <= 3.0.6 - Unauthenticated Arbitrary File Deletion via Signature Field

Summary

The Formidable Digital Signatures plugin for WordPress is vulnerable to file deletion due to insufficient file path validation in the delete_file function in all versions up to, and including, 3.0.6. This makes it possible for unauthenticated attackers to delete files on the server by supplying an attacker-controlled filename in the item_meta[field_id][content] parameter alongside the delete_saved_image flag during the standard entry-creation POST flow on any form that accepts anonymous submissions.

Severity

9.8 (Critical)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-11 21:03 UTC

CWE

CWE-23 - Relative Path Traversal

Assigner

Wordfence mitre root

References

3 references

URL	Tags
https://www.wordfence.com/threat-intel/vulnerabil…
https://formidableforms.com/
https://formidableforms.com/changelog/digital-sig…

Impacted products

1 product

Vendor	Product	Version
Strategy11	Formidable Digital Signatures	Affected: 0 , ≤ 3.0.6 (semver)

Credits

Rafie Muhammad

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-16230",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-11T21:03:29.644869Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-11T21:03:36.534Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Formidable Digital Signatures",
          "vendor": "Strategy11",
          "versions": [
            {
              "lessThanOrEqual": "3.0.6",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Rafie Muhammad"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "The Formidable Digital Signatures plugin for WordPress is vulnerable to file deletion due to insufficient file path validation in the delete_file function in all versions up to, and including, 3.0.6. This makes it possible for unauthenticated attackers to delete files on the server by supplying an attacker-controlled filename in the item_meta[field_id][content] parameter alongside the delete_saved_image flag during the standard entry-creation POST flow on any form that accepts anonymous submissions."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 9.8,
            "baseSeverity": "CRITICAL",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-23",
              "description": "CWE-23 Relative Path Traversal",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-11T19:37:27.821Z",
        "orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
        "shortName": "Wordfence"
      },
      "references": [
        {
          "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/c9a5f8ca-7efc-401b-8a93-07fbe7204dce?source=cve"
        },
        {
          "url": "https://formidableforms.com/"
        },
        {
          "url": "https://formidableforms.com/changelog/digital-signature-forms-3-1/"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-07-29T11:36:12.000Z",
          "value": "Vendor Notified"
        },
        {
          "lang": "en",
          "time": "2026-08-11T06:34:15.000Z",
          "value": "Disclosed"
        }
      ],
      "title": "Formidable Digital Signatures \u003c= 3.0.6 - Unauthenticated Arbitrary File Deletion via Signature Field"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
    "assignerShortName": "Wordfence",
    "cveId": "CVE-2026-16230",
    "datePublished": "2026-08-11T19:37:27.821Z",
    "dateReserved": "2026-07-18T14:23:51.315Z",
    "dateUpdated": "2026-08-11T21:03:36.534Z",
    "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.