FKIE_CVE-2026-91092

Vulnerability from fkie_nvd - Published: 2026-09-22 08:16 - Updated: 2026-09-23 19:19
Severity
4.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N
Summary
The wpForo Forum plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 3.1.5. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with subscriber-level access and above, to take over another guest author's forum post and modify its title, body, author name, and stored owner email address. This requires that guest posting and editing are enabled on the forum, and that the attacker knows the target guest author's email address.
References
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/wpforo/tags/3.1.5/classes/Actions.php#L806
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/wpforo/tags/3.1.5/classes/Members.php#L3704
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/wpforo/tags/3.1.5/classes/Posts.php#L319
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/wpforo/tags/3.1.5/includes/functions.php#L2820
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/wpforo/tags/3.1.5/includes/hooks.php#L1004
security@wordfence.comhttps://plugins.trac.wordpress.org/changeset?reponame=&old=3702319%40wpforo&new=3702319%40wpforo
security@wordfence.comhttps://www.wordfence.com/threat-intel/vulnerabilities/id/97084759-a8fb-4b26-a6fa-93d005b1110e?source=cve
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "wpForo Forum",
          "vendor": "tomdever",
          "versions": [
            {
              "lessThanOrEqual": "3.1.5",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "security@wordfence.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The wpForo Forum plugin for WordPress is vulnerable to authorization bypass in all versions up to, and including, 3.1.5. This is due to the plugin not properly verifying that a user is authorized to perform an action. This makes it possible for authenticated attackers, with subscriber-level access and above, to take over another guest author\u0027s forum post and modify its title, body, author name, and stored owner email address. This requires that guest posting and editing are enabled on the forum, and that the attacker knows the target guest author\u0027s email address."
    }
  ],
  "id": "CVE-2026-91092",
  "lastModified": "2026-09-23T19:19:43.803",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 4.3,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 1.4,
        "source": "security@wordfence.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-91092",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-09-23T18:37:44.048003Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-09-22T08:16:41.090",
  "references": [
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/wpforo/tags/3.1.5/classes/Actions.php#L806"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/wpforo/tags/3.1.5/classes/Members.php#L3704"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/wpforo/tags/3.1.5/classes/Posts.php#L319"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/wpforo/tags/3.1.5/includes/functions.php#L2820"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/wpforo/tags/3.1.5/includes/hooks.php#L1004"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/changeset?reponame=\u0026old=3702319%40wpforo\u0026new=3702319%40wpforo"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/97084759-a8fb-4b26-a6fa-93d005b1110e?source=cve"
    }
  ],
  "sourceIdentifier": "security@wordfence.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-862"
        }
      ],
      "source": "security@wordfence.com",
      "type": "Secondary"
    }
  ]
}



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