CVE-2025-63588

HIGH 1 PoC
MEDIUM Priority: 0.03 BB Relevance: 74/100
Published: 2025-11-06 Modified: 2026-11-05 First seen: 2026-11-05 Status: active

Attack Surface

Network Low Complexity No Auth Conf. Impact

CVSS Vector Breakdown

AV: Network
AC: Low
PR: None
UI: Required
S: Unchanged
C: High
I: Low
A: None

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.

Weakness Classification (1)

Affected Software (1)

VendorProductVersion
cmsimple-xh cmsimple_xh 1.8.0

Proof of Concept (1)

Bug Bounty Relevance

74 / 100
✓ Network accessible
✓ No authentication
✓ Low complexity
✓ PoC available (1)

CVSS Score

7.1 / 10.0 v3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N

EPSS — Exploitation Probability

0.36%
Raw Score 0.003590
Percentile 30.1%
Date 2026-11-13

EPSS Trend

2026-11-13
0.00359
2026-11-12
0.00359
2026-11-10
0.00359
2026-11-09
0.00359
2026-11-08
0.00359
2026-11-07
0.00359
2026-11-06
0.00359
2026-11-05
0.00359

Intelligence Sources

nvd ref →