CVE-2021-24552

CVE-2021-24552 is a high-severity vulnerability in Simple Events Calendar Project Simple Events Calendar with a CVSS 3.x base score of 7.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-89.

Key facts

Description

The Simple Events Calendar WordPress plugin through 1.4.0 does not sanitise, validate or escape the event_id POST parameter before using it in a SQL statement when deleting events, leading to an authenticated SQL injection issue

Frequently asked questions

What is CVE-2021-24552?
The Simple Events Calendar WordPress plugin through 1.4.0 does not sanitise, validate or escape the event_id POST parameter before using it in a SQL statement when deleting events, leading to an authenticated SQL injection issue
How severe is CVE-2021-24552?
CVE-2021-24552 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-24552 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (73rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-24552?
CVE-2021-24552 affects Simple Events Calendar Project Simple Events Calendar. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-24552?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-24552 published?
CVE-2021-24552 was published on 2021-08-23 and last updated on 2026-06-17.

References

Affected products (1)

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