Cross-site scripting vulnerability in Online Lesson Booking 0.8.6 and earlier allows remote attackers to inject arbitrary web script or HTML via unspecified vectors.
Conclusion & alert: CVE-2019-5972 is rated Moderate Risk (50.6/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.60%). Mandatory action: Review affected assets and schedule remediation.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
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 | 2026-06-15 | 0.73% | 1.60% | +0.87% |
| 2 | 2025-11-21 | 0.62% | 0.73% | +0.11% |
| 3 | 2025-11-18 | — | 0.62% | — |
Full EPSS history (15 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] |
| 4.3 | 2.0 | MEDIUM |
|
8.6 | 2.9 | [email protected] |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| sukimalab | online_lesson_booking | <= 0.8.6 | cpe:2.3:a:sukimalab:online_lesson_booking:*:*:*:*:*:wordpress:*:* |
| URL | Tags |
|---|---|
| https://jvn.jp/en/jp/JVN96988995/index.html | Third Party Advisory |
| https://olbsys.com/fixed-vulnerability-issue/ | Vendor Advisory |
| https://wordpress.org/plugins/online-lesson-booking-system/#developers | Product Release Notes Third Party Advisory |
| https://wpvulndb.com/vulnerabilities/9435 | Third Party Advisory |