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My Calendar – Accessible Event Manager 3.8.8 — 3.8.11 - Unauthenticated Arbitrary Shortcode Execution

CVE-2026-119714Published · Updated

Action summary

Affected: 3.8.8 – <3.8.11Update to 3.8.11 or newer

All remediation steps
Watch plugin
Severity
Medium6.5
CVSS
6.5
CVSS 3.1 · CNA (Wordfence)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
What does this vector mean?
AV:N Attack vector
Network
AC:L Attack complexity
Low
PR:N Privileges required
None
UI:N User interaction
None
S:U Scope
Unchanged
C:L Confidentiality
Low
I:L Integrity
Low
A:N Availability
None
Weakness
CWE-94 Improper Control of Generation of Code
Required access
No account needed
Exploit prediction (EPSS)
0.3% chance in 30 days24th percentile
CISA KEV
Not listed
On this page8

Am I affected?

My Calendar – Accessible Event Manager my-calendar

  1. Affected3.8.8 – < 3.8.11
  2. Patched in3.8.11

Update to 3.8.11 or newer.

You are affected if you run 3.8.8 – < 3.8.11. Version 3.8.11 and later are not affected by this issue.

  • Check your version: in wp-admin go to Plugins → Installed Plugins and read the version under My Calendar – Accessible Event Manager.
  • 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

  1. Update to version 3.8.11, or a newer patched version
  2. Rotate administrator passwords and application secrets if the site ran a vulnerable version while publicly reachable.
  3. Watch My Calendar – Accessible Event Manager to get an email when the next vulnerability is published.

Advisory

Source description from Wordfence Intelligence, credited to Andres Poulin Mateos.

The The My Calendar – Accessible Event Manager plugin for WordPress is vulnerable to arbitrary shortcode execution in version >= 3.8.8, < 3.8.11. 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.

Exploits & references

Proof-of-concept & detection

No public proof-of-concept or detection template is known for this vulnerability.

Advisories & patches

More in My Calendar – Accessible Event Manager

All 24
More vulnerabilities in My Calendar – Accessible Event Manager
SeverityVulnerabilityCVEPublished
Critical9.8Unauthenticated Privilege Escalation to 'mcs' Parameter via Reflected Shortcode Injection into 'above' Attribute
≤3.8.7Update to 3.4.25 or 3.5.22 or 3.6.18 or 3.7.18 or 3.8.8
CVE-2026-104798
Medium6.4Authenticated (Contributor+) Stored Cross-Site Scripting via 'fallback' Shortcode Attribute
≤3.8.3Update to 3.8.4
CVE-2026-77186
Medium6.4Authenticated (Contributor+) Stored Cross-Site Scripting via 'before' and 'after' Shortcode Attributes
≤3.8.3Update to 3.8.4
CVE-2026-77187
High7.5Unauthenticated SQL Injection via 'mc_auth' and 'mc_host' Parameters
≤3.7.8Update to 3.7.9
CVE-2026-6854
Medium5.3Insecure Direct Object Reference to Unauthenticated Sensitive Information Disclosure via 'vcal' Parameter
≤3.7.14Update to 3.7.15
CVE-2026-11896

Timeline

  1. CVE published

    Severity medium, CVSS 6.5

  2. 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.
EPSS
Exploit Prediction Scoring System by FIRST.org.
VulnCrest content
Summary, remediation guidance and page layout © VulnCrest. Not sourced from NVD.

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