XSS in Saasproject Booking Package
CVE-2021-20840
Cross-site scripting vulnerability in Booking Package - Appointment Booking Calendar System versions prior to 1.5.11 allows a remote attacker to inject an arbitrary script via unspecified vectors.
Vulnerability class: XSS (Cross-Site Scripting)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.
EPSS exploit prediction
EPSS: 0.013 (69.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 69th percentile — 69.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.012 · newest: 0.013 · change: +0.000
Affected products
- Saasproject Booking Package
- Saasproject Booking Package - Appointment Calendar System — versions versions prior to 1.5.11
Weakness classification (CWE)
Public proof-of-concept exploits
References
- wordpress.org/plugins/booking-package/ (Product)
- saasproject.net/ja/fixed/20211019.php (Vendor Advisory)
- jvn.jp/en/jp/JVN68066589/index.html (Third Party Advisory)
Frequently asked questions
- What is CVE-2021-20840?
- CVE-2021-20840 is a medium-severity vulnerability in Saasproject Booking Package, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2021-11-24.
- How severe is CVE-2021-20840?
- Medium severity. CVSS v3 base score is 6.1 out of 10.
- Is CVE-2021-20840 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.