CVE Alert: CVE-2025-11995 – jackdewey – Community Events

Risk verdict

High risk: unauthenticated, network-accessible stored cross-site scripting via the Community Events plugin; remediation should be prioritised promptly.

Why this matters

Attackers can inject scripts through the event details field, which execute in any user’s browser when the vulnerable page is loaded. This can enable session or credential theft, page defacement, or redirection, potentially affecting site visitors and, if admins are reached, broader compromise of the WordPress site.

Most likely attack path

An unauthenticated attacker stores a malicious payload in the event details parameter. On page load, the payload executes in the victim’s browser with the site’s context. Because no user interaction or privileges are required, successful exploitation hinges on public access to the vulnerable page and the ability to persist data in that field; the impact could extend beyond the plugin due to scope changes.

Who is most exposed

Public-facing WordPress sites that run the Community Events plugin and expose event details to visitors are at greatest risk; sites with open calendars and event listings are especially vulnerable.

Detection ideas

• Logs showing stored XSS patterns in event details fields (e.g., script tags, event handlers).
• Unusual or recurrent script fragments appearing in event pages or responses.
• User reports of unexpected popups, redirects, or credential prompts after visiting event pages.
• WAF/IDS alerts for XSS payloads targeting WordPress plugins.
• Posterior integrity checks show tampering with event content or plugin tables.

Mitigation and prioritisation

• Update to fixed plugin version or disable the plugin until patched.
• Validate and escape all input on server side; harden output escaping for event details.
• Implement a robust Content Security Policy restricting inline scripts and untrusted sources.
• Add tenancy controls or restrict access to event pages (where feasible) until patching.
• Plan a staging test and change window; verify backups before deployment.