CVE-2021-20840: saasproject booking_package Cross-site Scripting
CVSS: 6.1v3.1MediumModified
Published 24-11-2021Last modified 03-08-2024
Vulnerability summary
CVE-2021-20840 is a medium (CVSS 6.1) Cross-site Scripting vulnerability in saasproject booking_package. EPSS estimates a 1.28% chance of exploitation in the next 30 days, higher than 69.8% of scored vulnerabilities.
CVSS score
6.1/10
010
Medium · v3.1 (NVD)EPSS score
1.28%
0%100%
Low · 0.00 pp in 30 daysKEVNot listedIn no KEV catalog
RansomwareNone recordedNo known use recorded
Public exploits0No public exploits recorded
Timeline
- 24-11-2021PublishedVulnerability first disclosed.
- 03-08-2024Last modifiedVulnerability information updated.
Description
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.
CVSS metrics
3 scores · 2 sources · 2 versionsMedium 6.1Preferred score · NVD (NIST)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:NSourcesAll 2 agree
- wordfenceSource6.1MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Medium 4.3Preferred score · NVD (NIST)
AV:N/AC:M/Au:N/C:N/I:P/A:NSourcesSingle source
EPSS trend
Probability
1.28%
Chance of exploitation in the next 30 days
Percentile
70%
Versus all other CVEs
30-day change
0.00 pp
From 1.28% on 21-09-2026
21-09-202621-10-2026
EPSS score1.28%
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root causeAffected systems
Saasproject2 products
- booking_package< 1.5.11
- booking package - appointment booking calendar systemversions prior to 1.5.11
Wordpress1 product
- booking-package< 1.5.11
2 vendors · 3 products