CVE-2025-63588

Name: CVE-2025-63588
Creator: NVD / NIST
Published: 2025-11-06T17:15:46.197+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.1/10EPSS 0.29%

Last modified Jun 17, 2026

CVE-2025-63588 is a high-severity vulnerability rated 7.1/10 on the CVSS scale. 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.. EPSS estimates a 0.29% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

7.1/10

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

EPSS Probability

0.29%

20.8th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-79

Affected Software

Vendor	Product	Versions
Cmsimple-Xh	Cmsimple Xh	1.8.0

References

https://github.com/cybercrewinc/CVE-2025-63588Exploit, Third Party Advisory
https://helloandrewpaul.medium.com/reflected-xss-in-login-form-email-password-fields-vvveb-cms-v1-0-7-2-18800186804dNot Applicable
https://github.com/cybercrewinc/CVE-2025-63588Exploit, Third Party Advisory

Timeline

Published: Nov 6, 2025
Last Modified: Jun 17, 2026
Status: Analyzed

Frequently Asked Questions

What is CVE-2025-63588?

How severe is CVE-2025-63588?

CVE-2025-63588 has a CVSS score of 7.1/10 (HIGH severity). The EPSS model estimates a 0.29% probability of exploitation in the next 30 days.

How do I fix CVE-2025-63588?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2025-63588?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST