Answer in brief
CVE-2026-84740 records a Medium severity (CVSS 6.5) vulnerability in The Events Calendar 6.12.0 - 6.17.5 - Unauthenticated Arbitrary Shortcode Execution via 'view_data' Parameter. The current sources do not mark it as known exploited. The current feed maps Unknown/The Events Calendar (generic). Check affected ranges and fixed versions before updating.
Analysis pending evidence review
HOL Guard separates source facts from reviewed analysis. See the methodology.
CVSS is 6.5. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.
Analysis status
Analysis pending evidence review
Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.
The current feed maps Unknown/The Events Calendar (generic). Check affected ranges and fixed versions before updating.
| Package | Affected range | Fixed version |
|---|---|---|
| Unknown/The Events Calendargeneric | >=6.12.0 <6.17.5.1 | 6.17.5.1 |
Published upstream
Oct 2, 2026
Evidence: source:cvelist:source_dates:source-dates:recordSource modified
Oct 2, 2026
Evidence: source:cvelist:source_dates:source-dates:recordFirst seen by HOL
Oct 2, 2026
The Events Calendar WordPress plugin before 6.17.5.1 does not validate or sanitise data submitted to an unauthenticated AJAX action before merging it into its rendering context, allowing unauthenticated users to execute arbitrary shortcodes registered on the site.
Quoted source text, attributed separately from HOL analysis.