SEPTEMBER 15, 2026
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Case File

CVE-2026-77187

MEDIUM · CVSS 6.4 EPSS 0.19% Public Exploit

Source: NVD + CISA KEV + EPSS · Published 2026-09-09 · Last synced 2026-09-15

CyberRota Analysis

AI-Generated

The My Calendar – Accessible Event Manager plugin for WordPress is susceptible to Stored Cross-Site Scripting due to inadequate input sanitization and output escaping in the 'before' and 'after' Shortcode Attributes. This vulnerability allows authenticated attackers with contributor-level access or higher to inject malicious scripts into pages, which will execute when users visit those pages. WordPress site administrators using this plugin should prioritize patching to mitigate potential exploitation risks.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

GitHub PoC Links

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2026-77187
Severity
MEDIUM
CVSS
6.4
EPSS
0.19%
WordPress

Original NVD Description

The My Calendar – Accessible Event Manager plugin for WordPress is vulnerable to Stored Cross-Site Scripting via 'before' and 'after' Shortcode Attributes in all versions up to, and including, 3.8.3 due to insufficient input sanitization and output escaping. This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.