FKIE_CVE-2026-16635

Vulnerability from fkie_nvd - Published: 2026-08-01 09:17 - Updated: 2026-08-12 21:00
Severity
8.8 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
The Pronamic Pay plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 10.1.0 This is due to the `maybe_update_user_role()` function passing an attacker-controlled Gravity Forms field value (`$lead[$feed->user_role_field_id]`) directly into `WP_User::set_role()` without any allowlist validation, capability comparison, or permission check to constrain which roles can be assigned. This makes it possible for authenticated attackers, with Subscriber-level access and above, to escalate their own WordPress account to Administrator by tampering with the role field value in a form submission. Exploitation requires that an administrator has already configured a Pronamic Pay payment feed in Gravity Forms with the **Update User Role** option enabled and mapped to a form field; once that configuration is in place, no further preconditions exist to prevent an authenticated attacker from exploiting this vulnerability.
References
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/pronamic-ideal/tags/10.1.0/packages/wp-pay-extensions/gravityforms/src/Extension.php#L144
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/pronamic-ideal/tags/10.1.0/packages/wp-pay-extensions/gravityforms/src/Extension.php#L376
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/pronamic-ideal/tags/10.1.0/packages/wp-pay-extensions/gravityforms/src/Extension.php#L379
security@wordfence.comhttps://plugins.trac.wordpress.org/browser/pronamic-ideal/tags/10.1.0/packages/wp-pay-extensions/gravityforms/src/Extension.php#L988
security@wordfence.comhttps://plugins.trac.wordpress.org/changeset/3630401/pronamic-ideal/trunk/packages/wp-pay-extensions/gravityforms/src/Extension.php
security@wordfence.comhttps://plugins.trac.wordpress.org/changeset?old_path=%2Fpronamic-ideal/tags/10.1.0&new_path=%2Fpronamic-ideal/tags/10.2.0
security@wordfence.comhttps://www.wordfence.com/threat-intel/vulnerabilities/id/d42b8856-e5d0-4122-98a4-8c959832b271?source=cve
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Pronamic Pay",
          "vendor": "pronamic",
          "versions": [
            {
              "lessThanOrEqual": "10.1.0",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "security@wordfence.com"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The Pronamic Pay plugin for WordPress is vulnerable to Privilege Escalation in all versions up to, and including, 10.1.0 This is due to the `maybe_update_user_role()` function passing an attacker-controlled Gravity Forms field value (`$lead[$feed-\u003euser_role_field_id]`) directly into `WP_User::set_role()` without any allowlist validation, capability comparison, or permission check to constrain which roles can be assigned. This makes it possible for authenticated attackers, with Subscriber-level access and above, to escalate their own WordPress account to Administrator by tampering with the role field value in a form submission. Exploitation requires that an administrator has already configured a Pronamic Pay payment feed in Gravity Forms with the **Update User Role** option enabled and mapped to a form field; once that configuration is in place, no further preconditions exist to prevent an authenticated attacker from exploiting this vulnerability."
    }
  ],
  "id": "CVE-2026-16635",
  "lastModified": "2026-08-12T21:00:37.147",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.9,
        "source": "security@wordfence.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-16635",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-08-03T13:44:14.473068Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-08-01T09:17:00.970",
  "references": [
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/pronamic-ideal/tags/10.1.0/packages/wp-pay-extensions/gravityforms/src/Extension.php#L144"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/pronamic-ideal/tags/10.1.0/packages/wp-pay-extensions/gravityforms/src/Extension.php#L376"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/pronamic-ideal/tags/10.1.0/packages/wp-pay-extensions/gravityforms/src/Extension.php#L379"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/browser/pronamic-ideal/tags/10.1.0/packages/wp-pay-extensions/gravityforms/src/Extension.php#L988"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/changeset/3630401/pronamic-ideal/trunk/packages/wp-pay-extensions/gravityforms/src/Extension.php"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://plugins.trac.wordpress.org/changeset?old_path=%2Fpronamic-ideal/tags/10.1.0\u0026new_path=%2Fpronamic-ideal/tags/10.2.0"
    },
    {
      "source": "security@wordfence.com",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/d42b8856-e5d0-4122-98a4-8c959832b271?source=cve"
    }
  ],
  "sourceIdentifier": "security@wordfence.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-269"
        }
      ],
      "source": "security@wordfence.com",
      "type": "Secondary"
    }
  ]
}



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