SourceCodester Water Billing System v1.0 was discovered to contain a cross-site scripting (XSS) vulnerability via the lastname text box under the Add Client module.
Conclusion & alert: CVE-2023-27241 is rated High Exploit Risk (61.9/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 0.47%). Core evidence: 2 public exploit reference(s) are indexed (Exploit-DB). Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
| EDB-ID | Source | Kind | Published | Link |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ | |
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-04-01 | 0.58% | 0.47% | -0.11% |
| 2 | 2026-03-28 | 0.53% | 0.58% | +0.05% |
| 3 | 2025-12-20 | — | 0.53% | — |
Full EPSS history (8 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 6.1 | 3.1 | MEDIUM |
|
2.8 | 2.7 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| water_billing_system_project | water_billing_system | 1.0 | cpe:2.3:a:water_billing_system_project:water_billing_system:1.0:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| https://github.com/kaikai-11/WaterBilling-System | Exploit Vendor Advisory |
| https://github.com/kaikai-11/WaterBilling-System/blob/main/README.md | Exploit Vendor Advisory |