CVE-2026-16536

MEDIUMCVSS 5.3/10EPSS 0.14%

Last modified

CVE-2026-16536 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. 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.. EPSS estimates a 0.14% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
5.3/10

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

EPSS Probability
0.14%

3.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
UnknownSimple Google Calendar Outlook Events Widget< 3.1.0

References

Timeline

Published
Last Modified
Status
Received

Frequently Asked Questions

What is CVE-2026-16536?
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.
How severe is CVE-2026-16536?
CVE-2026-16536 has a CVSS score of 5.3/10 (MEDIUM severity). The EPSS model estimates a 0.14% probability of exploitation in the next 30 days.
How do I fix CVE-2026-16536?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST