CVE-2021-24555 json
Diary & Availability Calendar <= 1.0.3 - Authenticated (subscriber+) SQL Injection
published 2021-08-23 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-11467
- cvss
- 8.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.8%
- EPSS 0.8% chance of exploitation in 30 days, percentile 57%
- public exploits
- 0
- none known
Summary
The daac_delete_booking_callback function, hooked to the daac_delete_booking AJAX action, takes the id POST parameter which is passed into the SQL statement without proper sanitisation, validation or escaping, leading to a SQL Injection issue. Furthermore, the ajax action is lacking any CSRF and capability check, making it available to any authenticated user.
Exploit prediction
0.82% chance of exploitation in the next 30 days, higher than 57% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- wpscan.com https://wpscan.com/vulnerability/8eafd84b-6214-450b-869b-0afe7cca4c5f referenced PoC, tagged "exploit" by a source, unverified
- codevigilant.com https://codevigilant.com/disclosure/2021/wp-plugin-diary-availability-calendar/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.5 | AV:N/AC:L/Au:S/C:P/I:P/A:P |
Affected products
- Unknown Diary & Availability Calendar
Classification
- Weakness
- Technology feeds
References
-
wpscan.com
/vulnerability/8eafd84b-6214-450b-869b-0afe7cca4c5f
exploit, third-party-advisory
-
codevigilant.com
/disclosure/2021/wp-plugin-diary-availability-calendar/
exploit, third-party-advisory
Sources
- CVE List CVE-2021-24555
- NVD CVE-2021-24555
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