CVE-2025-63589

7.1 highEPSS 0.4%

High (7.1) in cmsimple-xh cmsimple xh. EPSS 0.4% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

7.1 high

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

EPSS: 0.4% chance of exploitation in the next 30 days; higher than 29% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2025-11-06
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

cmsimple-xh:cmsimple_xh

References

https://github.com/cmsimple-xh/cmsimple-xh/blob/master/index.php
https://github.com/cybercrewinc/CVE-2025-63589
https://github.com/cybercrewinc/CVE-2025-63589

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