CVE-2021-24604

4.8 mediumEPSS 0.6%

Medium (4.8) in offshorewebmaster availability calendar. EPSS 0.6% chance of exploitation in the next 30 days.

The Availability Calendar WordPress plugin before 1.2.2 does not sanitise or escape its Category Names before outputting them in page/post where the associated shortcode is embed, allowing high privilege users to perform Cross-Site Scripting attacks even when the unfiltered_html is disallowed

Severity

CVSS 3.1

4.8 medium

CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:L/I:L/A:N

EPSS: 0.6% chance of exploitation in the next 30 days; higher than 49% of CVEs (scores of 2026-10-31)
CWE: CWE-79
Published: 2021-09-20
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

offshorewebmaster:availability_calendar

References

https://wpscan.com/vulnerability/d084c5b1-45f1-4e7e-b3e9-3c98ae4bce9c
https://wpscan.com/vulnerability/d084c5b1-45f1-4e7e-b3e9-3c98ae4bce9c

Check your stack JSON