Vulnerability-Lookup

GHSA-MQWG-84FF-GQHV

Vulnerability from github – Published: 2026-09-19 09:32 – Updated: 2026-09-19 15:31

Details

The JetFormBuilder — Dynamic Blocks Form Builder WordPress plugin before 3.6.5.3 does not sufficiently restrict which PHP functions can be used as a custom field-validation callback, relying on a blocklist that omits a file-deletion function, allowing users able to manage forms to cause arbitrary files on the server to be deleted. The deletion itself is carried out when the form is submitted, which requires no authentication.

Severity

5.5 (Medium)


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

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JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-19860"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-73"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-19T07:16:32Z",
    "severity": "MODERATE"
  },
  "details": "The JetFormBuilder \u2014 Dynamic Blocks Form Builder WordPress plugin before 3.6.5.3 does not sufficiently restrict which PHP functions can be used as a custom field-validation callback, relying on a blocklist that omits a file-deletion function, allowing users able to manage forms to cause arbitrary files on the server to be deleted. The deletion itself is carried out when the form is submitted, which requires no authentication.",
  "id": "GHSA-mqwg-84ff-gqhv",
  "modified": "2026-09-19T15:31:21Z",
  "published": "2026-09-19T09:32:09Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-19860"
    },
    {
      "type": "WEB",
      "url": "https://wpscan.com/vulnerability/d73d8d27-6dad-4a7f-bf51-f5fc18ebc81f"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:L",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-19860 (GCVE-0-2026-19860)

Vulnerability from cvelistv5 – Published: 2026-09-19 06:00 – Updated: 2026-09-19 13:20

Title

JetFormBuilder 3.5.6.2 - 3.6.5.2 - Admin+ Arbitrary File Deletion via Server-Side Validation Callback

Summary

Severity

5.5 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-19 13:15 UTC

CWE

CWE-73 External Control of File Name or Path
CWE-73 - External Control of File Name or Path

Assigner

WPScan mitre root

References

1 reference

URL	Tags
https://wpscan.com/vulnerability/d73d8d27-6dad-4a…	exploitvdb-entrytechnical-description

Impacted products

1 product

Vendor	Product	Version
Unknown	JetFormBuilder — Dynamic Blocks Form Builder	Affected: 3.5.6.2 , < 3.6.5.3 (semver)

Credits

Sai Praneeth Koti WPScan

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "LOW",
              "baseScore": 5.5,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "LOW",
              "privilegesRequired": "HIGH",
              "scope": "CHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:L",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-19860",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-09-19T13:15:37.351861Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-73",
                "description": "CWE-73 External Control of File Name or Path",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-09-19T13:20:41.684Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "JetFormBuilder \u2014 Dynamic Blocks Form Builder",
          "vendor": "Unknown",
          "versions": [
            {
              "lessThan": "3.6.5.3",
              "status": "affected",
              "version": "3.5.6.2",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Sai Praneeth Koti"
        },
        {
          "lang": "en",
          "type": "coordinator",
          "value": "WPScan"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "The JetFormBuilder \u2014 Dynamic Blocks Form Builder WordPress plugin before 3.6.5.3 does not sufficiently restrict which PHP functions can be used as a custom field-validation callback, relying on a blocklist that omits a file-deletion function, allowing users able to manage forms to cause arbitrary files on the server to be deleted. The deletion itself is carried out when the form is submitted, which requires no authentication."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-73 External Control of File Name or Path",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-19T06:00:14.409Z",
        "orgId": "1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81",
        "shortName": "WPScan"
      },
      "references": [
        {
          "tags": [
            "exploit",
            "vdb-entry",
            "technical-description"
          ],
          "url": "https://wpscan.com/vulnerability/d73d8d27-6dad-4a7f-bf51-f5fc18ebc81f/"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "JetFormBuilder 3.5.6.2 - 3.6.5.2 - Admin+ Arbitrary File Deletion via Server-Side Validation Callback",
      "x_generator": {
        "engine": "WPScan CVE Generator"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81",
    "assignerShortName": "WPScan",
    "cveId": "CVE-2026-19860",
    "datePublished": "2026-09-19T06:00:14.409Z",
    "dateReserved": "2026-08-14T10:00:56.687Z",
    "dateUpdated": "2026-09-19T13:20:41.684Z",
    "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.