Vulnerability-Lookup

GHSA-G9RF-98HP-9VC3

Vulnerability from github – Published: 2026-08-28 09:31 – Updated: 2026-08-28 18:31

Details

The Ultimate Member WordPress plugin before 2.13.0 does not validate a submitted role selection when it cannot resolve the set of roles a profile form permits, and screens the value against the site's registered role names rather than against the form's own allow-list, allowing unauthenticated users who register through the Ultimate Member WordPress plugin before 2.13.0's own form to grant themselves arbitrary capabilities and reach administrator-equivalent access.

Severity

8.1 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2026-19423"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-269"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-28T08:16:40Z",
    "severity": "HIGH"
  },
  "details": "The Ultimate Member  WordPress plugin before 2.13.0 does not validate a submitted role selection when it cannot resolve the set of roles a profile form permits, and screens the value against the site\u0027s registered role names rather than against the form\u0027s own allow-list, allowing unauthenticated users who register through the Ultimate Member  WordPress plugin before 2.13.0\u0027s own form to grant themselves arbitrary capabilities and reach administrator-equivalent access.",
  "id": "GHSA-g9rf-98hp-9vc3",
  "modified": "2026-08-28T18:31:27Z",
  "published": "2026-08-28T09:31:44Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-19423"
    },
    {
      "type": "WEB",
      "url": "https://wpscan.com/vulnerability/3cdc8700-165a-4787-a3d0-b0914865b07b"
    }
  ],
  "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:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-19423 (GCVE-0-2026-19423)

Vulnerability from cvelistv5 – Published: 2026-08-28 06:00 – Updated: 2026-08-28 13:03

Title

Ultimate Member 2.6.7 - 2.12.1 - Unauthenticated Privilege Escalation via Role Field on Profile Forms

Summary

Severity

8.1 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-28 12:59 UTC

CWE

CWE-269 Improper Privilege Management
CWE-269 - Improper Privilege Management

Assigner

WPScan mitre root Scorecard

References

1 reference

URL	Tags
https://wpscan.com/vulnerability/3cdc8700-165a-47…	exploitvdb-entrytechnical-description

Impacted products

1 product

Vendor	Product	Version
Unknown	Ultimate Member	Affected: 2.6.7 , < 2.13.0 (semver)

Credits

Jakub Herman WPScan

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "HIGH",
              "attackVector": "NETWORK",
              "availabilityImpact": "HIGH",
              "baseScore": 8.1,
              "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:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2026-19423",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-08-28T12:59:01.522226Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-269",
                "description": "CWE-269 Improper Privilege Management",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-08-28T13:03:20.842Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Ultimate Member",
          "vendor": "Unknown",
          "versions": [
            {
              "lessThan": "2.13.0",
              "status": "affected",
              "version": "2.6.7",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Jakub Herman"
        },
        {
          "lang": "en",
          "type": "coordinator",
          "value": "WPScan"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "The Ultimate Member  WordPress plugin before 2.13.0 does not validate a submitted role selection when it cannot resolve the set of roles a profile form permits, and screens the value against the site\u0027s registered role names rather than against the form\u0027s own allow-list, allowing unauthenticated users who register through the Ultimate Member  WordPress plugin before 2.13.0\u0027s own form to grant themselves arbitrary capabilities and reach administrator-equivalent access."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "CWE-269 Improper Privilege Management",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-08-28T06:00:16.618Z",
        "orgId": "1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81",
        "shortName": "WPScan"
      },
      "references": [
        {
          "tags": [
            "exploit",
            "vdb-entry",
            "technical-description"
          ],
          "url": "https://wpscan.com/vulnerability/3cdc8700-165a-4787-a3d0-b0914865b07b/"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "Ultimate Member 2.6.7 - 2.12.1 - Unauthenticated Privilege Escalation via Role Field on Profile Forms",
      "x_generator": {
        "engine": "WPScan CVE Generator"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "1bfdd5d7-9bf6-4a53-96ea-42e2716d7a81",
    "assignerShortName": "WPScan",
    "cveId": "CVE-2026-19423",
    "datePublished": "2026-08-28T06:00:16.618Z",
    "dateReserved": "2026-08-10T11:01:48.677Z",
    "dateUpdated": "2026-08-28T13:03:20.842Z",
    "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.

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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GHSA-G9RF-98HP-9VC3

CVE-2026-19423 (GCVE-0-2026-19423)

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