Vulnerability · Published Aug 4, 2026 · Assigned by WPScan
CVE-2026-16536Simple Google Calendar Outlook Events Widget < 3.1.0 - Unauthenticated SSRF via calendar_id
Medium 5.3
In plain English
A medium-severity server-side request forgery in Simple Google Calendar Outlook Events Widget from Unknown. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 25% of all known vulnerabilities).
Severity (CVSS 3.1)5.3Medium
Exploit odds (30 days)0.3%top 74.6% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Unknown | Simple Google Calendar Outlook Events Widget | 0 – before 3.1.0 |
Weakness: CWE-918 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
References
- https://wpscan.com/vulnerability/effa5549-ecfa-45ba-9044-7345d674c2ca/ exploit, vdb-entry, technical-description