Description
The Newsletters WordPress plugin before 4.16 does not authenticate or validate a bounce-processing request before fetching a user-supplied URL on the server side, allowing unauthenticated attackers to make the site issue requests to arbitrary internal or external hosts.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | Newsletters | < 4.16 | 4.16 |
Automated scanner template
A ready-made Nuclei template detects this vulnerability automatically. Vulnerabilities with public scanner templates are typically probed across the internet soon after the template appears — exposed systems should be patched first.
- Newsletters < 4.16 - Unauthenticated SSRF via SNS Bounce Handler http/cves/2026/CVE-2026-16268.yaml
Source: projectdiscovery/nuclei-templates (MIT) — updated daily. Only links are listed.
References
- https://wpscan.com/vulnerability/65612dd4-83d8-40c5-8e12-862e9b5f940b/ exploit vdb-entry technical-description