Security readout for executives and security teams
Plain-English summary
A WordPress event-calendar plugin trusted administrator input when deleting events. A malicious or compromised administrator account could abuse that flaw to affect the site database. The sources do not provide CVSS scoring, broad exploit evidence, or a confirmed patched version in this bundle.
Executive priority
Treat as a targeted WordPress admin-risk issue, not an internet-wide emergency based on this bundle. Prioritize sites with the plugin installed and weak administrator controls, then remediate by updating, disabling, or removing the plugin according to vendor guidance.
Technical view
CVE-2021-24552 is a CWE-89 SQL injection in Simple Events Calendar through 1.4.0. The event_id POST parameter was not sanitized, validated, or escaped before use in a SQL statement during event deletion. The reported privilege requirement is authenticated admin or higher.
Likely exposure
Exposure is limited to WordPress sites running Simple Events Calendar version 1.4.0 or earlier. Risk is most relevant where administrator accounts are shared, weakly protected, delegated to third parties, or already compromised.
Exploitation context
The bundle does not show CISA KEV listing or confirmed active exploitation. The vulnerability still matters because SQL injection in an administrator workflow can increase damage from compromised admin access and can affect database integrity or confidentiality.
Researcher notes
Available evidence identifies the vulnerable parameter and admin-level deletion path, but the bundle lacks CVSS details, exploit-in-the-wild confirmation, CPEs, and a named fixed release. Avoid assuming unauthenticated exposure or active exploitation without additional vendor or threat-intelligence confirmation.
Mitigation direction
- Inventory WordPress sites for Simple Events Calendar version 1.4.0 or earlier.
- Check vendor, WPScan, or plugin maintainer guidance for an updated safe version.
- If no safe update is available, disable or remove the plugin.
- Restrict administrator access and enforce MFA for WordPress admin accounts.
- Back up the WordPress database before remediation changes.
Validation and detection
- Confirm whether Simple Events Calendar is installed on each WordPress site.
- Record the installed plugin version and compare it with 1.4.0 or earlier.
- Review WordPress admin accounts for unnecessary or shared administrator privileges.
- Check site and database logs for unusual event deletion activity.
- Verify remediation by confirming the plugin is updated, disabled, or removed.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-89: Database access and collection lookup
Injection into data stores can inform collection, data access, and exfiltration detection reviews. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupDatabase behavior lookup
The CVE wording references database injection or access, so collection and exfiltration review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-24552 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://wpscan.com/vulnerability/3482a015-a5ed-4913-b516-9eae2b3f89dbCVE reference · x_refsource_MISC
- https://codevigilant.com/disclosure/2021/wp-plugin-simple-events-calendar/CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')
Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.