CVE-2025-63588

HIGH

CMSimpleXH - Unauthenticated Reflected Cross-Site Scripting via Query Handling

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2025-63588. PoCs published by cybercrewinc.

AI-analyzed exploit summary This repository contains a proof-of-concept for CVE-2025-63588, a reflected XSS vulnerability in CMSimple_XH 1.8. The exploit demonstrates how attacker-controlled input in the URI is reflected into HTML attributes without proper encoding, leading to arbitrary JavaScript execution.

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.

Exploits (1)

nomisec WORKING POC
by cybercrewinc · poc
https://github.com/cybercrewinc/CVE-2025-63588

This repository contains a proof-of-concept for CVE-2025-63588, a reflected XSS vulnerability in CMSimple_XH 1.8. The exploit demonstrates how attacker-controlled input in the URI is reflected into HTML attributes without proper encoding, leading to arbitrary JavaScript execution.

Classification
Working Poc 100%
Attack Type
Xss
Complexity
Trivial
Reliability
Reliable
Target: CMSimple_XH 1.8
No auth needed
Prerequisites: Victim must visit a crafted URL
MITRE ATT&CK
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (2)

Core 2

Scores

CVSS v3 7.1
EPSS 0.0029
EPSS Percentile 20.1%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N

CISA SSVC

Vulnrichment
Exploitation poc
Automatable no
Technical Impact partial

Details

CWE
CWE-79
Status published
Products (1)
cmsimple-xh/cmsimple_xh 1.8.0
Published Nov 06, 2025
Tracked Since Feb 18, 2026