Eventer <= 3.11.2.1 — Unauthenticated Arbitrary Shortcode Execution
CVE-2025-39483Published · Updated Action summary
Affected: ≤3.11.2.1Update to 3.11.2.2 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?
Eventer eventer
- Affected≤ 3.11.2.1
- Patched in3.11.2.2
Update to 3.11.2.2 or newer.
You are affected if you run ≤ 3.11.2.1. Version 3.11.2.2 and later are not affected by this issue.
- Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under Eventer.
- 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 3.11.2.2, or a newer patched version
- Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
- Watch Eventer to get an email when the next vulnerability is published.
Advisory
Source description from Wordfence Intelligence, credited to Bonds.
The The Eventer - WordPress Event & Booking Manager Plugin plugin for WordPress is vulnerable to arbitrary shortcode execution in all versions up to, and including, 3.11.2.1. This is due to the software allowing users to execute an action that does not properly validate a value before running do_shortcode. This makes it possible for unauthenticated attackers to execute arbitrary shortcodes. The vulnerability was partially patched in version 3.10.0, 3.11.2, and 3.11.2.1.
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 Eventer
All 13| Severity | Vulnerability | CVE | Published |
|---|---|---|---|
| Medium6.1 | WordPress Event & Booking Manager Plugin <= 0.1.1 - Reflected Cross-Site Scripting ≤0.1.1No patch available | CVE-2026-27394 | |
| High7.5 | Unauthenticated SQL Injection via 'code' Parameter ≤4.4.3Update to 4.4.4 | CVE-2026-9700 | |
| Critical9.8 | Insecure Password Reset Mechanism to Unauthenticated Privilege Escalation ≤4.4.4Update to 4.4.5 | CVE-2026-9701 | |
| Medium4.3 | Missing Authorization ≤3.9.6No patch available | CVE-2025-39482 | |
| High7.5 | Unauthenticated SQL Injection ≤3.9.6No patch available | CVE-2025-39481 |
- Medium6.1WordPress Event & Booking Manager Plugin <= 0.1.1 - Reflected Cross-Site Scripting
≤0.1.1No patch available
- High7.5Unauthenticated SQL Injection via 'code' Parameter
≤4.4.3Update to 4.4.4
- Critical9.8Insecure Password Reset Mechanism to Unauthenticated Privilege Escalation
≤4.4.4Update to 4.4.5
- Medium4.3Missing Authorization
≤3.9.6No patch available
- High7.5Unauthenticated SQL Injection
≤3.9.6No patch available
Timeline
CVE published
Severity medium, CVSS 6.5
Record last updated
Sources & licenses
Wordfence record- Vulnerability data
- Wordfence Intelligence. Copyright 2012-2026 Defiant Inc. Licensed under the CC BY-SA 4.0.
- CVE® identifiers
- Copyright 1999-2026 The MITRE Corporation. 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.