High
Security advisory
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.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2025-63588
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 4 Nov 2026, 11:23 UTC · Revision 1
Source evidence
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.
osv:CVE-2025-63588
Complete source record
{
"id": "5dcdb72a06653b9f51d2f80b0c196c14b1b4a942389ad3a619fc89b5011aaa0f",
"url": "https://osv.dev/vulnerability/CVE-2025-63588",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2025-63588",
"summary": "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.",
"evidence": "osv:CVE-2025-63588",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2025-63588",
"aliases": [
"CVE-2025-63588"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/cmsimple-xh/cmsimple-xh",
"type": "GIT",
"events": [
{
"introduced": "569ec8e70618892017558dbf5214d8d414322728"
},
{
"last_affected": "569ec8e70618892017558dbf5214d8d414322728"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:cmsimple-xh:cmsimple_xh:1.8.0:-:*:*:*:*:*:*",
"range": [
{
"introduced": "1.8.0-NA"
},
{
"last_affected": "1.8.0-NA"
}
],
"source": "CPE_STRING"
}
]
}
}
],
"versions": [
"1.8.0-NA",
"1.8.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-63588.json"
}
}
],
"modified": "2026-10-28T02:30:34.480080204Z",
"provider": "osv",
"references": [
"https://helloandrewpaul.medium.com/reflected-xss-in-login-form-email-password-fields-vvveb-cms-v1-0-7-2-18800186804d",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/63xxx/CVE-2025-63588.json",
"https://nvd.nist.gov/vuln/detail/CVE-2025-63588",
"https://github.com/cybercrewinc/CVE-2025-63588"
],
"provider_metadata": {
"cna_assigner": "mitre",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/63xxx/CVE-2025-63588.json"
}
},
"related_cves": [
{
"value": "CVE-2025-63588",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 501991,
"published_at": "2025-11-06T00:00:00+00:00"
}