Vulnerability-Lookup

CVE-2026-17563 (GCVE-0-2026-17563)

Vulnerability from cvelistv5 – Published: 2026-09-02 14:16 – Updated: 2026-09-02 14:57

Title

WP User Frontend < 4.3.11 - Unauthenticated Post Creation via Subscription-Gated Form

Summary

The User Frontend WordPress plugin before 4.3.11 does not enforce its subscription-purchase requirement when processing frontend post submissions, only when rendering the form, allowing unauthenticated users to create and, depending on the form's configuration, immediately publish posts through forms restricted to paying subscribers.

Severity

5.3 (Medium)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-02 14:47 UTC

CWE

CWE-862 Missing Authorization
CWE-862 - Missing Authorization

Assigner

WPScan mitre root

References

1 reference

URL	Tags
https://wpscan.com/vulnerability/293b7391-ac1a-4e…	exploitvdb-entrytechnical-description

Impacted products

1 product

Vendor	Product	Version	CPE status
Unknown	User Frontend	Affected: 0 , < 4.3.11 (semver)	guessed

Credits

Charles Vosburgh WPScan

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-17563

Vulnerability from fkie_nvd - Published: 2026-09-02 15:17 - Updated: 2026-09-02 15:17

Severity

5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Summary

References

	URL	Tags
	contact@wpscan.com	https://wpscan.com/vulnerability/293b7391-ac1a-4ec5-95d1-4578391906b2/

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "collectionURL": "https://wordpress.org/plugins",
          "defaultStatus": "unaffected",
          "product": "User Frontend",
          "vendor": "Unknown",
          "versions": [
            {
              "lessThan": "4.3.11",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "contact@wpscan.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The User Frontend WordPress plugin before 4.3.11 does not enforce its subscription-purchase requirement when processing frontend post submissions, only when rendering the form, allowing unauthenticated users to create and, depending on the form\u0027s configuration, immediately publish posts through forms restricted to paying subscribers."
    }
  ],
  "id": "CVE-2026-17563",
  "lastModified": "2026-09-02T15:17:37.717",
  "metrics": {
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        "cvssData": {
          "attackComplexity": "LOW",
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          "baseScore": 5.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 1.4,
        "source": "contact@wpscan.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
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        "ssvcData": {
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          "options": [
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            {
              "automatable": "yes"
            },
            {
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            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-09-02T14:47:43.285238Z",
          "version": "2.0.3"
        }
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  "published": "2026-09-02T15:17:37.717",
  "references": [
    {
      "source": "contact@wpscan.com",
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          "value": "CWE-862"
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      "type": "Secondary"
    }
  ]
}

GHSA-RGV4-FWHV-PQ9X

Vulnerability from github – Published: 2026-09-02 15:34 – Updated: 2026-09-02 15:34

Details

Severity

5.3 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-17563"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-862"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-02T15:17:37Z",
    "severity": "MODERATE"
  },
  "details": "The User Frontend WordPress plugin before 4.3.11 does not enforce its subscription-purchase requirement when processing frontend post submissions, only when rendering the form, allowing unauthenticated users to create and, depending on the form\u0027s configuration, immediately publish posts through forms restricted to paying subscribers.",
  "id": "GHSA-rgv4-fwhv-pq9x",
  "modified": "2026-09-02T15:34:49Z",
  "published": "2026-09-02T15:34:49Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-17563"
    },
    {
      "type": "WEB",
      "url": "https://wpscan.com/vulnerability/293b7391-ac1a-4ec5-95d1-4578391906b2"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}

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.

Action not permitted

CVE-2026-17563 (GCVE-0-2026-17563)

FKIE_CVE-2026-17563

GHSA-RGV4-FWHV-PQ9X

Tags

Sightings

Nomenclature