Read the docs
TI-2025-39375 Aliases CVE-2025-63589GHSA-vjvr-7hrq-r8p6

A reflected XSS vulnerability exists in CMSimple_XH 1.8's index.php router when…

Priority MEDIUM 64CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
Required
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
High · Low · None
Fix status
No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-79.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00355 29th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
——all versions—No fix listedCNA
  • — Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:cmsimple-xh:cmsimple_xh:1.8.0:-:*:*:*:*:*:*1.8.0VulnerableCmsimple-Xh
  • cpe:2.3:a:cmsimple-xh:cmsimple_xh:1.8.0:-:*:*:*:*:*:* Versions 1.8.0 Vulnerable ·Cmsimple-Xh

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-63589
  2. 2026-10-03 Alias added: GHSA-vjvr-7hrq-r8p6

References

Exploit 1

Other 1

  • TI-2021-22353 CMSimple_XH 1.7.4 Authenticated Remote Code Execution via Content Editing CVSS 4.0HIGH 8.6
  • TI-2025-39374 An unauthenticated reflected cross-site scripting vulnerability in the query handling of… CVSS 3.1HIGH 7.1
  • TI-2024-22786 CMSimple_XH 1.7.6 allows XSS by uploading a crafted SVG document. CVSS 3.1MEDIUM 6.1
  • TI-2021-18881 CMSimple_XH 1.7.4 is affected by a remote code execution (RCE) vulnerability. CVSS 3.1CRITICAL 10.0

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences