CVE-2021-24232: Advanced Booking Calendar < 1.6.8 - Authenticated Reflected Cross-Site Scripting (XSS)

Severity: medium (CVSS 5.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2021-04-22 · updated 2026-06-17
Weakness: CWE-79

Description

The Advanced Booking Calendar WordPress plugin before 1.6.8 does not sanitise the license error message when output in the settings page, leading to an authenticated reflected Cross-Site Scripting issue

Affected products

Advanced Booking Calendar: before 1.6.8 — fixed in 1.6.8

How to fix

Upgrade to a fixed version: Advanced Booking Calendar 1.6.8. Check the vendor advisory for mitigations.

References

https://wpscan.com/vulnerability/f06629b5-8b15-48eb-a7a7-78b693e06b71
https://wpscan.com/vulnerability/f06629b5-8b15-48eb-a7a7-78b693e06b71

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