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.
CVE-2025-63588
HIGHPre-NVD 7.17.1—Elevated
EchelonGraph scoreMEDIUM confidence
Score 7.1 from GitHub Security Advisory (severity: HIGH) published 2025-11-06. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 7.1; sources differ by 0.0.
Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
7.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.1Exploit: Elevated riskExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 7.1
- EG Score
- 7.1(medium)
- EG Risk
- 48(Track)EG Risk 48/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity71% × 45%Exploitation40% × 40%Automatability0% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 0%
- EPSS %ILE
- 27%
- KEV
- Not listed
Published
November 6, 2025
Last Modified
June 17, 2026
References (3)
- cve@mitrehttps://github.com/cybercrewinc/CVE-2025-63588
- cve@mitrehttps://helloandrewpaul.medium.com/reflected-xss-in-login-form-email-password-fields-vvveb-cms-v1-0-7-2-18800186804d
- 134c704f-9b21-4f2e-91b3-4a467353bcc0https://github.com/cybercrewinc/CVE-2025-63588
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Frequently asked(5)
What is CVE-2025-63588?
CVE-2025-63588 is a high vulnerability published on November 6, 2025. 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…
When was CVE-2025-63588 disclosed?
CVE-2025-63588 was first published in the National Vulnerability Database on November 6, 2025, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2025-63588 actively exploited?
CVE-2025-63588 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 73.1% of all scored CVEs.
What is the CVSS score of CVE-2025-63588?
CVE-2025-63588 has a CVSS v3.1 base score of 7.1 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2025-63588?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2025-63588, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.
Dependency Blast Radius
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