Simple Google Calendar Outlook Events Widget < 3.1.0 - Unauthenticated SSRF via calendar_id
Priority LOW 30CWE-918Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- Low · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-918 and the CVSS impact.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00323 25th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed Simple Google Calendar Outlook Events Widget (Unknown): 3.1.0
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Unknown | Simple Google Calendar Outlook Events Widget | before 3.1.0 | 3.1.0 | Patch available | CNA |
- Simple Google Calendar Outlook Events Widget VendorUnknown Affected before 3.1.0 Fixed in 3.1.0 Patch available CNA
Remediation
- Fix · CNA Simple Google Calendar Outlook Events Widget (Unknown) Fixed in 3.1.0
Timeline
- 2026-10-02 Threatist record created from CVE-2026-16536
- 2026-10-03 Alias added: GHSA-ff6j-mvmc-7fp8
References
Sources
- CVE-2026-16536 · CVE Program
- CVE-2026-16536 · NVD
- FIRST EPSS
- GHSA-ff6j-mvmc-7fp8 · GitHub Advisory Database · CC BY 4.0
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