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.

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Fixes

Solution

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Workaround

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History

Wed, 11 Nov 2026 12:15:00 +0000

Type Values Removed Values Added
First Time appeared Wordpress-extensions
Wordpress-extensions newsletters
Vendors & Products Wordpress-extensions
Wordpress-extensions newsletters

Thu, 06 Aug 2026 15:30:00 +0000

Type Values Removed Values Added
Weaknesses CWE-918
Metrics cvssV3_1

{'score': 8.2, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:H/A:N'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 06 Aug 2026 06:30:00 +0000

Type Values Removed Values Added
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.
Title Newsletters < 4.16 - Unauthenticated Server-Side Request Forgery via SNS Bounce Handler
References

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: WPScan

Published:

Updated: 2026-08-06T14:08:39.333Z

Reserved: 2026-07-20T09:09:39.417Z

Link: CVE-2026-16268

cve-icon Vulnrichment

Updated: 2026-08-06T14:08:35.915Z

cve-icon NVD

Status : Deferred

Published: 2026-08-06T07:16:28.300

Modified: 2026-08-26T16:31:16.753

Link: CVE-2026-16268

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-11T14:33:36Z

Weaknesses