CVE-2025-63714Public exploitNetwork attack vector

Browser script execution via unsanitized username prefix

Published Nov 7, 2025 · Updated Nov 12, 2025

Cross-site scripting in SourceCodester Modern User Account Generator 1.0 allows remote attackers to run JavaScript through the Username Prefix field. The script.js account-generation path renders the prefix into generated-account DOM content without sanitization or output encoding. No authentication is required, but the attacker must generate accounts with crafted input and a user must click the injected element; script execution remains confined to that browser context.

CVSS severity6.1
Medium
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Cross-site scripting in SourceCodester Modern User Account Generator 1.0 allows remote attackers to run JavaScript through the Username Prefix field. The script.js account-generation path renders the prefix into generated-account DOM content without sanitization or output encoding. No authentication is required, but the attacker must generate accounts with crafted input and a user must click the injected element; script execution remains confined to that browser context.

The record

CVE
CVE-2025-63714
Published
Nov 7, 2025
Updated
Nov 12, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-79, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 7, 2025CVE publishedPublication date reported by the CVE source.
  2. Nov 12, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

6.1CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1203Exploitation for Client Execution

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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