CVE-2026-16536 — MEDIUM (5.3)

Vulnerability 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.

CVSS Score

5.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

NONE

Availability

NONE

Related Weaknesses (CWE)

CWE-918

References

https://wpscan.com/vulnerability/effa5549-ecfa-45ba-9044-7345d674c2ca/

FAQ

What is CVE-2026-16536?

CVE-2026-16536 is a vulnerability with a CVSS score of 5.3 (MEDIUM). 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 perf...

How severe is CVE-2026-16536?

CVE-2026-16536 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2026-16536?

Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.