CVE-2021-24604

low-risk
Published 2021-09-20

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

Do I need to act?

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0.22% chance of exploitation
EPSS score — low exploit probability
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Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
4
CVSS 4.8/10 Medium
NETWORK / LOW complexity

Affected Products (1)

Availability Calendar

Affected Vendors

Offshorewebmaster

References (2)

Exploit https://wpscan.com/vulnerability/d084c5b1-45f1-4e7e-b3e9-3c98ae4bce9c
Exploit https://wpscan.com/vulnerability/d084c5b1-45f1-4e7e-b3e9-3c98ae4bce9c
25
/ 100
low-risk
Severity 19/34 · Moderate
Exploitability 1/34 · Minimal
Exposure 5/34 · Minimal