CVE-2026-16536 in Simple Google Calendar Outlook Events Widget Plugin

Summary

by MITRE • 08/04/2026

The Simple Google Calendar Outlook Events Widget WordPress plugin before 3.1.0 does not validate a user-supplied URL before performing a server-side request, allowing unauthenticated attackers to perform Server-Side Request Forgery attacks and, in some cases, read the response of the internal request.

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• Responsible: WPScan
• Reservation: 07/22/2026
• Disclosure: 08/04/2026
• Moderation: accepted
• Entry: VDB-385762
• CPE: ready
• CWE: CWE-918 (confirmed)
• CVSS: 7.3 (VulDB)
• EPSS: 0.00000
• KEV: no
• Activities: very low
• Sector: Hostingprovider

Sources

• MITRE: https://www.cve.org/CVERecord?id=CVE-2026-16536
• NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-16536
• CVE Details: https://www.cvedetails.com/cve/CVE-2026-16536/