Cross-site request forgery (CSRF) vulnerability in Online Lesson Booking 0.8.6 and earlier allows remote attackers to hijack the authentication of administrators via unspecified vectors.
Conclusion & alert: CVE-2019-5973 is rated Moderate Risk (41.8/100): CVSS High severity, with low exploitation likelihood (EPSS 0.14%). 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 | 2025-03-30 | 4.09% | 0.14% | -3.96% |
| 2 | 2025-03-29 | 0.14% | 4.09% | +3.96% |
| 3 | 2025-03-24 | — | 0.14% | — |
Full EPSS history (12 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 8.8 | 3.1 | HIGH |
|
2.8 | 5.9 | [email protected] |
| 6.8 | 2.0 | MEDIUM |
|
8.6 | 6.4 | [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 Third Party Advisory |
| https://wpvulndb.com/vulnerabilities/9435 | Third Party Advisory |