Vulnerability-Lookup

GHSA-J7R4-M35R-QFFP

Vulnerability from github – Published: 2026-03-05 09:30 – Updated: 2026-03-05 09:30

Details

The Membership Plugin – Restrict Content plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 3.2.20. This is due to the rcp_setup_registration_init() function accepting any membership level ID via the rcp_level POST parameter without validating that the level is active or that payment is required. Combined with the add_user_role() method which assigns the WordPress role configured on the membership level without status checks, this makes it possible for unauthenticated attackers to register with any membership level, including inactive levels that grant privileged WordPress roles such as Administrator, or paid levels that charge a sign-up fee. The vulnerability was partially patched in version 3.2.18.

Severity

8.1 (High)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-1321"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-862"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-03-05T08:15:57Z",
    "severity": "HIGH"
  },
  "details": "The Membership Plugin \u2013 Restrict Content plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 3.2.20. This is due to the `rcp_setup_registration_init()` function accepting any membership level ID via the `rcp_level` POST parameter without validating that the level is active or that payment is required. Combined with the `add_user_role()` method which assigns the WordPress role configured on the membership level without status checks, this makes it possible for unauthenticated attackers to register with any membership level, including inactive levels that grant privileged WordPress roles such as Administrator, or paid levels that charge a sign-up fee. The vulnerability was partially patched in version 3.2.18.",
  "id": "GHSA-j7r4-m35r-qffp",
  "modified": "2026-03-05T09:30:34Z",
  "published": "2026-03-05T09:30:34Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-1321"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/restrict-content/tags/3.2.15/core/includes/class-rcp-registration.php#L107"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/restrict-content/tags/3.2.15/core/includes/memberships/class-rcp-membership.php#L1939"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/restrict-content/tags/3.2.15/core/includes/registration-functions.php#L1191"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/restrict-content/tags/3.2.15/core/includes/registration-functions.php#L1203"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/changeset/3447187"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/changeset/3460177"
    },
    {
      "type": "WEB",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/abfaa4a6-92b0-4233-b08d-e668090d3fc2?source=cve"
    }
  ],
  "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-2026-1321 (GCVE-0-2026-1321)

Vulnerability from cvelistv5 – Published: 2026-03-05 07:30 – Updated: 2026-04-08 17:14

Title

Membership Plugin – Restrict Content <= 3.2.20 - Unauthenticated Privilege Escalation via 'rcp_level'

Summary

The Membership Plugin – Restrict Content plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 3.2.20. This is due to the `rcp_setup_registration_init()` function accepting any membership level ID via the `rcp_level` POST parameter without validating that the level is active or that payment is required. Combined with the `add_user_role()` method which assigns the WordPress role configured on the membership level without status checks, this makes it possible for unauthenticated attackers to register with any membership level, including inactive levels that grant privileged WordPress roles such as Administrator, or paid levels that charge a sign-up fee. The vulnerability was partially patched in version 3.2.18.

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 2026-03-05 14:54 UTC

CWE

CWE-862 - Missing Authorization

Assigner

Wordfence mitre root

References

7 references

URL	Tags
https://www.wordfence.com/threat-intel/vulnerabil…
https://plugins.trac.wordpress.org/browser/restri…
https://plugins.trac.wordpress.org/browser/restri…
https://plugins.trac.wordpress.org/browser/restri…
https://plugins.trac.wordpress.org/browser/restri…
https://plugins.trac.wordpress.org/changeset/3447187/
https://plugins.trac.wordpress.org/changeset/3460177/

Impacted products

1 product

Vendor	Product	Version
stellarwp	Membership Plugin – Restrict Content	Affected: 0 , ≤ 3.2.20 (semver)

Credits

Angus Girvan

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-1321",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-03-05T14:54:54.966669Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-03-05T14:55:02.301Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Membership Plugin \u2013 Restrict Content",
          "vendor": "stellarwp",
          "versions": [
            {
              "lessThanOrEqual": "3.2.20",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Angus Girvan"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "The Membership Plugin \u2013 Restrict Content plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 3.2.20. This is due to the `rcp_setup_registration_init()` function accepting any membership level ID via the `rcp_level` POST parameter without validating that the level is active or that payment is required. Combined with the `add_user_role()` method which assigns the WordPress role configured on the membership level without status checks, this makes it possible for unauthenticated attackers to register with any membership level, including inactive levels that grant privileged WordPress roles such as Administrator, or paid levels that charge a sign-up fee. The vulnerability was partially patched in version 3.2.18."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 8.1,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-862",
              "description": "CWE-862 Missing Authorization",
              "lang": "en",
              "type": "CWE"
            }
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      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-08T17:14:45.884Z",
        "orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
        "shortName": "Wordfence"
      },
      "references": [
        {
          "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/abfaa4a6-92b0-4233-b08d-e668090d3fc2?source=cve"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/restrict-content/tags/3.2.15/core/includes/registration-functions.php#L1191"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/restrict-content/tags/3.2.15/core/includes/registration-functions.php#L1203"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/restrict-content/tags/3.2.15/core/includes/class-rcp-registration.php#L107"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/restrict-content/tags/3.2.15/core/includes/memberships/class-rcp-membership.php#L1939"
        },
        {
          "url": "https://plugins.trac.wordpress.org/changeset/3447187/"
        },
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          "url": "https://plugins.trac.wordpress.org/changeset/3460177/"
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      ],
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          "lang": "en",
          "time": "2026-01-22T01:37:00.000Z",
          "value": "Vendor Notified"
        },
        {
          "lang": "en",
          "time": "2026-03-04T00:00:00.000Z",
          "value": "Disclosed"
        }
      ],
      "title": "Membership Plugin \u2013 Restrict Content \u003c= 3.2.20 - Unauthenticated Privilege Escalation via \u0027rcp_level\u0027"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
    "assignerShortName": "Wordfence",
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    "datePublished": "2026-03-05T07:30:55.675Z",
    "dateReserved": "2026-01-22T01:21:39.470Z",
    "dateUpdated": "2026-04-08T17:14:45.884Z",
    "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.

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GHSA-J7R4-M35R-QFFP

CVE-2026-1321 (GCVE-0-2026-1321)

Tags

Sightings

Nomenclature

Related by attack behaviour