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Simple Calendar vulnerabilities
Simple Calendar has 2 known vulnerabilities in this database. The most recent published record is dated 25 Sep 2024.
- Known vulnerabilities
- 2
- Active installs
- 50,000+
- Latest version
- 4.3.0
- Last updated
- 28 Sep 2026
- Most recent
- 25 Sep 2024
Find it in your WordPress dashboard under Plugins. Severity is based on the CVSS score published with the CVE where one is available.
| Vulnerability | Severity | Affected | Fix | Published |
|---|---|---|---|---|
| Cross-site scripting (XSS) CVE-2024-8549 | Medium 6.1 | Before 3.4.3 | Fixed in 3.4.3 | 25 Sep 2024 |
| Cross-site scripting (XSS) CVE-2014-7138 | Not scored | Up to 2.0.3.1 | Fixed in a later version (latest 4.3.0) | 16 Oct 2014 |
Read the published descriptions
- CVE-2024-8549, 25 Sep 2024
- The Simple Calendar - Google Calendar Plugin plugin for WordPress is vulnerable to Reflected Cross-Site Scripting due to the use of add_query_arg without appropriate escaping on the URL in all versions up to, and including, 3.4.2. This makes it possible for unauthenticated attackers to inject arbitrary web scripts in pages that execute if they can successfully trick a user into performing an action such as clicking on a link. CVE record
- CVE-2014-7138, 16 Oct 2014
- Cross-site scripting (XSS) vulnerability in the Google Calendar Events plugin before 2.0.4 for WordPress allows remote attackers to inject arbitrary web script or HTML via the gce_feed_ids parameter in a gce_ajax action to wp-admin/admin-ajax.php. CVE record
What to do if you run Simple Calendar
If you run Simple Calendar, open WordPress and check the installed version in Plugins. Compare it with the affected versions in the vulnerability record. If a fixed version is available, take a current backup and update to that version or the latest supported release.
If no fixed version exists, consider disabling and removing the plugin or replacing it with a maintained alternative. After dealing with the affected software, check administrator users, unexpected file changes, redirects, unfamiliar pages and security logs for signs that the site may already have been altered.
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