CVE-2021-24943 (GCVE-0-2021-24943)

Vulnerability from cvelistv5 – Published: 2021-12-06 15:55 – Updated: 2024-08-03 19:49
VLAI Previdian
Title
Registrations for the Events Calendar < 2.7.6 - Unauthenticated SQL Injection
Summary
The Registrations for the Events Calendar WordPress plugin before 2.7.6 does not sanitise and escape the event_id in the rtec_send_unregister_link AJAX action (available to both unauthenticated and authenticated users) before using it in a SQL statement, leading to an unauthenticated SQL injection.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
Assigner
References
Impacted products
Credits
Krzysztof Zając
Previdian
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: d9273c31-606d-486e-b8f7-1c102713d666

Vulnerability ID: CVE-2021-24943

Status: Confirmed

Status Updated: 2026-03-10 01:00 CET

Exploited: Yes

Timestamps
First Seen: 2026-03-10
Asserted: 2026-03-10
Scope
Notes: Registrations for the Events Calendar < 2.7.6 - Unauthenticated SQL Injection | Affected: Events Calendar / Registrations for the Events Calendar | CVSS: 9.8 (CRITICAL) | EPSS: 0.07303 | Used in malware: unknown | Not yet in CISA KEV: True
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: previdian

Details
Feed Previdian (previdian.com)
Title Registrations for the Events Calendar < 2.7.6 - Unauthenticated SQL Injection
Cve Id CVE-2021-24943
Vendor Events Calendar
Ghsa Id None
Product Registrations for the Events Calendar
Added Date 2026-03-10T00:00:00.000Z
Cvss Score 9.8
Epss Score 0.07303
Previous Ids
Cvss Severity CRITICAL
Virtual Patch False
Cvss Estimated False
Epss Percentile 0.94188
Used In Malware unknown
Vulnerability Id CVE-2021-24943
Ahead Of Cisa Kev None
Not Yet In Cisa Kev True
References
Created: 2026-10-02 09:09 CEST | Updated: 2026-10-02 09:09 CEST
Show details on NVD website
To clipboard 

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