Vulnerability-Lookup

GHSA-82VF-3973-8G6R

Vulnerability from github – Published: 2026-05-05 09:31 – Updated: 2026-05-05 09:31

Details

The User Registration & Membership plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the embed_form_action() function in all versions up to, and including, 5.1.4. This makes it possible for authenticated attackers, with Contributor-level access and above, to append shortcode content to arbitrary pages they do not own or have permission to edit.

Severity

4.3 (Medium)


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

Show details on source website

JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2026-3601"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-862"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-05-05T09:16:03Z",
    "severity": "MODERATE"
  },
  "details": "The User Registration \u0026 Membership plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the `embed_form_action()` function in all versions up to, and including, 5.1.4. This makes it possible for authenticated attackers, with Contributor-level access and above, to append shortcode content to arbitrary pages they do not own or have permission to edit.",
  "id": "GHSA-82vf-3973-8g6r",
  "modified": "2026-05-05T09:31:55Z",
  "published": "2026-05-05T09:31:55Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-3601"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/user-registration/tags/5.1.2/includes/admin/class-ur-admin-assets.php#L370"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/user-registration/tags/5.1.2/includes/class-ur-ajax.php#L1003"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/user-registration/trunk/includes/admin/class-ur-admin-assets.php#L370"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/user-registration/trunk/includes/class-ur-ajax.php#L1003"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/changeset/3485702/user-registration/trunk/includes/class-ur-ajax.php?contextall=1"
    },
    {
      "type": "WEB",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/c8798fb2-4cab-4960-9e32-fd74bb4a5091?source=cve"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-3601 (GCVE-0-2026-3601)

Vulnerability from cvelistv5 – Published: 2026-05-05 08:27 – Updated: 2026-05-06 14:07

Title

User Registration & Membership <= 5.1.4 - Missing Authorization to Authenticated (Contributor+) Limited Page Content Modification

Summary

The User Registration & Membership plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the `embed_form_action()` function in all versions up to, and including, 5.1.4. This makes it possible for authenticated attackers, with Contributor-level access and above, to append shortcode content to arbitrary pages they do not own or have permission to edit.

Severity

4.3 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-05-06 14:07 UTC

CWE

CWE-862 - Missing Authorization

Assigner

Wordfence mitre root

References

6 references

URL	Tags
https://www.wordfence.com/threat-intel/vulnerabil…
https://plugins.trac.wordpress.org/browser/user-r…
https://plugins.trac.wordpress.org/browser/user-r…
https://plugins.trac.wordpress.org/browser/user-r…
https://plugins.trac.wordpress.org/browser/user-r…
https://plugins.trac.wordpress.org/changeset/3485…

Impacted products

1 product

Vendor	Product	Version
wpeverest	User Registration & Membership – Free & Paid Memberships, Subscriptions, Content Restriction, User Profile, Custom User Registration & Login Builder	Affected: 0 , ≤ 5.1.4 (semver)

Credits

Hunter Jensen

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-3601",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-05-06T14:07:38.966801Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-05-06T14:07:49.080Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "User Registration \u0026 Membership \u2013 Free \u0026 Paid Memberships, Subscriptions, Content Restriction, User Profile, Custom User Registration \u0026 Login Builder",
          "vendor": "wpeverest",
          "versions": [
            {
              "lessThanOrEqual": "5.1.4",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Hunter Jensen"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "The User Registration \u0026 Membership plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the `embed_form_action()` function in all versions up to, and including, 5.1.4. This makes it possible for authenticated attackers, with Contributor-level access and above, to append shortcode content to arbitrary pages they do not own or have permission to edit."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 4.3,
            "baseSeverity": "MEDIUM",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
            "version": "3.1"
          }
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-862",
              "description": "CWE-862 Missing Authorization",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-05T08:27:36.202Z",
        "orgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
        "shortName": "Wordfence"
      },
      "references": [
        {
          "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/c8798fb2-4cab-4960-9e32-fd74bb4a5091?source=cve"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/user-registration/trunk/includes/class-ur-ajax.php#L1003"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/user-registration/tags/5.1.2/includes/class-ur-ajax.php#L1003"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/user-registration/trunk/includes/admin/class-ur-admin-assets.php#L370"
        },
        {
          "url": "https://plugins.trac.wordpress.org/browser/user-registration/tags/5.1.2/includes/admin/class-ur-admin-assets.php#L370"
        },
        {
          "url": "https://plugins.trac.wordpress.org/changeset/3485702/user-registration/trunk/includes/class-ur-ajax.php?contextall=1"
        }
      ],
      "timeline": [
        {
          "lang": "en",
          "time": "2026-03-05T14:55:53.000Z",
          "value": "Vendor Notified"
        },
        {
          "lang": "en",
          "time": "2026-05-04T19:57:08.000Z",
          "value": "Disclosed"
        }
      ],
      "title": "User Registration \u0026 Membership \u003c= 5.1.4 - Missing Authorization to Authenticated (Contributor+) Limited Page Content Modification"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "b15e7b5b-3da4-40ae-a43c-f7aa60e62599",
    "assignerShortName": "Wordfence",
    "cveId": "CVE-2026-3601",
    "datePublished": "2026-05-05T08:27:36.202Z",
    "dateReserved": "2026-03-05T14:40:38.401Z",
    "dateUpdated": "2026-05-06T14:07:49.080Z",
    "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.