XSS in Cmsimple-Xh Cmsimple Xh
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.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N.
EPSS exploit prediction
EPSS: 0.003 (24.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 25th percentile — 24.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Cmsimple-Xh Cmsimple Xh — versions 1.8.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- helloandrewpaul.medium.com/reflected-xss-in-login-form-email-password-fields-vv… (Not Applicable)
- github.com/cybercrewinc/CVE-2025-63588 (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2025-63588?
- CVE-2025-63588 is a high-severity vulnerability in Cmsimple-Xh Cmsimple Xh, classified under Cross-site Scripting. CVSS score: 7.1/10. Published 2025-11-06.
- How severe is CVE-2025-63588?
- High severity. CVSS v3 base score is 7.1 out of 10.
- Is CVE-2025-63588 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.