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© 2026 FAUCET Technologies LLC. All rights reserved.

CVE-2021-24555

26
FAUCET Score

CVE-2021-24555 is a high-severity SQL Injection vulnerability affecting the roosty diary-availability-calendar WordPress plugin. The flaw, rated 8.8 CVSS, allows any authenticated user to execute arbitrary SQL commands due to improper sanitization of the 'id' POST parameter within the 'daac_delete_booking_callback' function, which also lacks CSRF and capability checks. This could lead to full compromise of confidentiality, integrity, and availability. Currently, there is no evidence of active exploitation, nor is public exploit code available, and it has received minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.0.3CPE matchmatch criteria
cpe:2.3:a:roosty:diary-availability-calendar:*:*:*:*:*:wordpress:*:*

CVSS Data

CVSS version used by this source: 3.1

8.8HIGH

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
2.8
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.82%
Probability of exploitation in next 30 days
EPSS Percentile
53.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0082 is in the 48th percentile among its peer group of 17,844 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.3 Bluesky, 0.1 Mastodon, and 0.2 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

codevigilant.com / disclosure/2021/wp-plugin-diary-availability-calendar
ExploitThird Party Advisory
wpscan.com / vulnerability/8eafd84b-6214-450b-869b-0afe7cca4c5f
ExploitThird Party Advisory