Is availability-calendar (WordPress plugin) vulnerable?

WordPress availability-calendar has 2 known advisories in the phpwarden feed. Feed 2026.10.29.1, updated 2026-10-28.

2advisories

0critical

0on CISA KEV

0no fix recorded

CVE	Title	Severity	CVSS	Affected	Fixed in
CVE-2021-24606	The Availability Calendar WordPress plugin before 1.2.1 does not escape the category attribute from its shortcode before using it in a SQL s	high	8.8	`<1.2.1`	`1.2.1`
CVE-2021-24604	The Availability Calendar WordPress plugin before 1.2.2 does not sanitise or escape its Category Names before outputting them in page/post w	medium	4.8	`<1.2.2`	`1.2.2`

Am I affected?

Find out in one command. phpwarden checks your WordPress install against this advisory and 20,000+ others, ranked by real-world exploitation (CISA KEV + EPSS). Free, offline, open data.

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pip install phpwarden

# then
phpwarden wordpress /var/www/html

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