CVE-2026-40308 Details.
My Calendar WordPress Plugin - Information Disclosure
Atlas does not check this one. Needs a scripted sequence.
This check is a series of requests where each step depends on the last, often after logging in. Atlas runs single, read-only probes, so it does not run this one.
About CVE-2026-40308. What It Means.
My Calendar WordPress plugin <= 3.7.6 contains an injection vulnerability caused by unvalidated user input passed to parse_str() in mc_ajax_mcjs_action endpoint, letting unauthenticated attackers access or crash sites via switch_to_blog(), exploit requires WordPress Multisite or Single Site setup.
Affected Product. What Is Hit.
- Vendor
- joedolson
- Product
- Joedolson My Calendar
FAQ
Common Questions.
My Calendar WordPress Plugin - Information Disclosure. My Calendar WordPress plugin <= 3.7.6 contains an injection vulnerability caused by unvalidated user input passed to parse_str() in mc_ajax_mcjs_action endpoint, letting unauthenticated attackers access or crash sites via switch_to_blog(), exploit requires WordPress Multisite or Single Site setup.
No. This check is a series of requests where each step depends on the last, often after logging in. Atlas runs single, read-only probes, so it does not run this one. The facts about CVE-2026-40308 are on this page, and you can request a demo to see how Brandefense watches your whole external attack surface.
CVE-2026-40308 is not on the CISA Known Exploited Vulnerabilities list at the time of writing, but it is still worth fixing.
Update Joedolson My Calendar to the latest version from the vendor, or follow the vendor's advice to switch off the affected feature. Vendor links are listed on this page when they are known.
This page lists the public facts about CVE-2026-40308. Atlas does not run a check for it, so nothing here says whether a particular site is affected.