The Events Calendar 6.12.0 - 6.17.5 - Unauthenticated Arbitrary Shortcode Execution via 'view_data' Parameter
Priority LOW 34CWE-74Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00223 12th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed The Events Calendar (Unknown): 6.17.5.1
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Unknown | The Events Calendar | 6.12.0 to before 6.17.5.1 | 6.17.5.1 | Patch available | CNA |
- The Events Calendar VendorUnknown Affected 6.12.0 to before 6.17.5.1 Fixed in 6.17.5.1 Patch available CNA
Remediation
- Fix · CNA The Events Calendar (Unknown) Fixed in 6.17.5.1
Timeline
- 2026-10-02 Threatist record created from CVE-2026-84740
- 2026-10-03 Alias added: GHSA-4c37-j68q-cmxj
References
Sources
- CVE-2026-84740 · CVE Program
- CVE-2026-84740 · NVD
- FIRST EPSS
- GHSA-4c37-j68q-cmxj · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences