CVE-2025-63588: cmsimple xh XSS — Exploit

Description

An unauthenticated reflected cross-site scripting vulnerability in the query handling of CMSimpleXH allows remote attackers to inject and execute arbitrary JavaScript in a victim's browser via a crafted request (e.g., a maliciously crafted POST login). Successful exploitation may lead to theft of session cookies, credential disclosure, or other client-side impacts.

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CVSS v3.1 Score

7.1

HIGH

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

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

Affected Products

Vendor	Product	Versions
cmsimple-xh	cmsimple_xh	All

References

Exploits

https://github.com/cybercrewinc/CVE-2025-63588 https://github.com/cybercrewinc/CVE-2025-63588

Other References

https://helloandrewpaul.medium.com/reflected-xss-in-login-form-email-password-fields-vvveb-cms-v1-0-7-2-18800186804d

Frequently Asked Questions

What is CVE-2025-63588? +

An unauthenticated reflected cross-site scripting vulnerability in the query handling of CMSimpleXH allows remote attackers to inject and execute arbitrary JavaScript in a victim's browser via a crafted request (e.g., a maliciously crafted POST login). Successful exploitation may lead to theft of session cookies, credential disclosure, or other client-side impacts. It has a CVSS v3.1 base score of 7.1 (HIGH).

How severe is CVE-2025-63588? +

CVE-2025-63588 has a CVSS v3.1 score of 7.1 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2025-63588? +

CVE-2025-63588 affects products from cmsimple-xh, specifically: cmsimple_xh. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-63588? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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CVE-2025-63588