The Events Calendar 6.12.0 — 6.17.5 - Unauthenticated Arbitrary Shortcode Execution
CVE-2026-84740Published · Updated Action summary
Affected: 6.12.0 – 6.17.5Update to 6.17.5.1 or newer
All remediation steps- Severity
- Medium6.5
- CVSS
- 6.5CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:NWhat does this vector mean?
AV:NAttack vector- Network
AC:LAttack complexity- Low
PR:NPrivileges required- None
UI:NUser interaction- None
S:UScope- Unchanged
C:LConfidentiality- Low
I:LIntegrity- Low
A:NAvailability- None
- Required access
- No account needed
- Exploit prediction (EPSS)
- No score
- CISA KEV
- Not listed
On this page8
Am I affected?
The Events Calendar the-events-calendar
- Affected6.12.0 – 6.17.5
- Patched in6.17.5.1
Update to 6.17.5.1 or newer.
You are affected if you run 6.12.0 – 6.17.5. Version 6.17.5.1 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under The Events Calendar.
- No admin access? Run a passive check of your site. It reads public files only.
- No account is needed to exploit this. Treat any exposed site on an affected version as at risk.
What to do
- Update to version 6.17.5.1, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch The Events Calendar to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Jakub Herman.
The The Events Calendar plugin for WordPress is vulnerable to Arbitrary Shortcode Execution in versions 6.12.0 through 6.17.5. This is due to the use of do_shortcode() on user supplied input. This makes it possible for unauthenticated attackers to execute arbitrary shortcodes registered on the site. The impact depends on which shortcodes the site has registered, so a site running a plugin whose shortcodes expose data or perform actions is affected more severely.
Exploits & references
Proof-of-concept & detection
No public proof-of-concept or detection template is known for this vulnerability.
Advisories & patches
- Advisorywordfence.com
Related CVEs
More in The Events Calendar
All 47| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium6.4 | Authenticated (Contributor+) Stored Cross-Site Scripting ≤6.18.3Update to 6.18.3.1 | CVE-2026-123464 | |
| Medium6.5 | Unauthenticated Arbitrary Shortcode Execution ≤6.18.3Update to 6.18.3.1 | CVE-2026-123469 | |
| Medium4.3 | Missing Authorization ≤6.18.2Update to 6.18.3 | CVE-2026-119367 | |
| Medium6.4 | Authenticated (Contributor+) Stored Cross-Site Scripting ≤6.18.2Update to 6.18.3 | CVE-2026-119369 | |
| Medium5.3 | Missing Authorization ≤6.18.2Update to 6.18.3 | CVE-2026-119368 |
- Medium6.4Authenticated (Contributor+) Stored Cross-Site Scripting
≤6.18.3Update to 6.18.3.1
- Medium6.5Unauthenticated Arbitrary Shortcode Execution
≤6.18.3Update to 6.18.3.1
- Medium4.3Missing Authorization
≤6.18.2Update to 6.18.3
- Medium6.4Authenticated (Contributor+) Stored Cross-Site Scripting
≤6.18.2Update to 6.18.3
- Medium5.3Missing Authorization
≤6.18.2Update to 6.18.3
Timeline
CVE published
Severity medium, CVSS 6.5
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. [object Object] Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- [object Object]. Used under the CVE Program. CVE® is a registered trademark of The MITRE Corporation.
- CVSS / CWE
- National Vulnerability Database (NVD), shown unmodified. This product uses the NVD API but is not endorsed or certified by the NVD.
- VulnCrest content
- Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.