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CVE-2026-84740

The Events Calendar 6.12.0 - 6.17.5 - Unauthenticated Arbitrary Shortcode Execution via 'view_data' Parameter

MEDIUM
6.5
CVSS Score
Published: October 2, 2026 at 06:56 AM UTC
Updated: October 2, 2026 at 06:00 PM UTC
1 product affected across 1 vendorThe Events Calendar

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Severity
MEDIUM6.5
Exploit prediction
EPSS 0.2%
SSVC
No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

The Events Calendar· Stellarwpwordpress-plugin
60%
6.12.0 ≤ v < 6.17.5.16.12.0
Affected range stops below 6.17.5.1, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

ExploitVDB EntryTechnical Description
Source: cverecord
https://wpscan.com/vulnerability/3381a51e-beaa-4420-a33b-6a68612a2e8a/

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.5MEDIUMWPScan
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-74

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