WPZOOM Connect: AI Chat, Click to Chat, Social Icons & Share Buttons <= 4.7.3 - Unauthenticated Sensitive Information Disclosure via HMAC Signature Collision (Missing Domain Separation) in HMAC Signat

{
  "id": "fc92f5ea0237f9380a703686fb80ef9b8982e3a628c771fb81711be65d22da1f",
  "url": "https://osv.dev/vulnerability/CVE-2026-100149",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "WPZOOM Connect: AI Chat, Click to Chat, Social Icons & Share Buttons <= 4.7.3 - Unauthenticated Sensitive Information Disclosure via HMAC Signature Collision (Missing Domain Separation) in HMAC Signat",
    "summary": "The WPZOOM Connect: AI Chat, Click to Chat, Social Icons & Share Buttons plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 4.7.3 via the 'x-yamidoo-signature (attacker-obtained via inline_js identify payload)' parameter. This makes it possible for unauthenticated attackers to extract the full customer card — including name, WordPress user ID, order history, order totals, purchased products, payment method labels, and EDD Software Licensing license keys with status and activation counts — for any arbitrary victim email address on the site. Exploitation requires the attacker to register a WooCommerce customer or subscriber-level account with a crafted email address whose local part encodes the target timestamp and victim email, allowing the signature printed into the page HTML by inline_js() to pass verify_request() for an arbitrary victim; both the share_customer_data and identify_logged_in settings are enabled by default, so no non-default configuration is required.",
    "evidence": "osv:CVE-2026-100149",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2026-100149",
      "aliases": [
        "CVE-2026-100149"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/wpzoom/social-icons-widget-by-wpzoom",
              "type": "GIT",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "351a873ac6c99fd8fb63115628a9d612427c3097"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0"
                      },
                      {
                        "last_affected": "4.7.3"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                  },
                  {
                    "range": [
                      {
                        "fixed": "351a873ac6c99fd8fb63115628a9d612427c3097"
                      }
                    ],
                    "source": "REFERENCES_COMMIT"
                  }
                ]
              }
            }
          ],
          "versions": [
            "4.7.3",
            "4.7.2",
            "4.7.1",
            "4.7.0",
            "4.6.3",
            "4.6.2",
            "4.6.1",
            "4.6.0",
            "4.5.11",
            "4.5.10",
            "4.5.7",
            "4.5.9",
            "4.5.8",
            "4.5.6",
            "4.5.5",
            "4.5.4",
            "4.5.3",
            "4.5.2",
            "4.5.1",
            "4.5.0",
            "4.3.4",
            "4.3.3",
            "4.3.2",
            "4.3.1",
            "4.3.0",
            "4.2.18",
            "4.2.17",
            "4.2.16",
            "4.2.15",
            "4.2.14",
            "4.2.13",
            "4.2.12",
            "4.2.11",
            "4.2.10",
            "4.2.9",
            "4.2.8",
            "4.2.7",
            "4.2.6",
            "4.2.5",
            "4.2.4",
            "4.2.3",
            "4.2.2",
            "4.2.1",
            "4.2.0",
            "4.1.3"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-100149.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:42.143344775Z",
      "provider": "osv",
      "references": [
        "https://plugins.trac.wordpress.org/browser/social-icons-widget-by-wpzoom/tags/4.7.3/includes/classes/class-wpzoom-ai-chat-customer.php#L82",
        "https://plugins.trac.wordpress.org/browser/social-icons-widget-by-wpzoom/tags/4.7.3/includes/classes/class-wpzoom-ai-chat-customer.php#L93",
        "https://plugins.trac.wordpress.org/browser/social-icons-widget-by-wpzoom/tags/4.7.3/includes/classes/class-wpzoom-ai-chat.php#L921",
        "https://www.wordfence.com/threat-intel/vulnerabilities/id/e0c9026c-d83e-41ac-be3a-93a33c32c47b?source=cve",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/100xxx/CVE-2026-100149.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2026-100149",
        "https://github.com/wpzoom/social-icons-widget-by-wpzoom/commit/351a873ac6c99fd8fb63115628a9d612427c3097"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-200"
        ],
        "cna_assigner": "Wordfence",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/100xxx/CVE-2026-100149.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2026-100149",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 509938,
  "published_at": "2026-10-03T05:29:17.935+00:00"
}