XSS in Cmsimple-Xh Cmsimple Xh
CVE-2025-63589
A reflected XSS vulnerability exists in CMSimple_XH 1.8's index.php router when attacker-controlled path segments are not sanitized or encoded before being inserted into the generated HTML (navigation links, breadcrumbs, search form action, footer links). An attacker-controlled string placed in the URL path is reflected into multiple HTML elements, allowing execution of arbitrary JavaScript in victims' browsers visiting a crafted URL.
Vulnerability class: XSS (Cross-Site Scripting)
EPSS: 0.003 (24.8th percentile) — read the EPSS interpretation.
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.
Affected products
- Cmsimple-xh Cmsimple_xh — versions 1.8.0
- N/a — versions n/a
Weakness classification (CWE)
Public proof-of-concept exploits
References
- cve@mitre.org (Product)
- cve@mitre.org (Exploit, Third Party Advisory)
Frequently asked questions
- What is CVE-2025-63589?
- CVE-2025-63589 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-2025-63589?
- High severity. CVSS v3 base score is 7.1 out of 10.
- Is CVE-2025-63589 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.